Los Altos Auto Repair

How do Los Altos auto owners know if an odometer is telling the truth?

Well, back in '86, Congress passed the Truth-in-Mileage Act to protect CA consumers against mileage fraud. It says a CA seller must certify the mileage reported is the Actual Mileage.

To have your odometer checked in Los Altos CA, stop by Allied Auto Works:

Allied Auto Works
Los Altos, CA 94024 650.968.7227

If it isn't, the seller must say why; like maybe the odometer is past its mechanical limits. Some older odometers only go to 99,999 miles and then start over at 0. Or, the odometer has been tampered with, broken or replaced.

If the seller tells you the mileage isn’t accurate, there’s not much chance of putting a good number to it; And there’s the unscrupulous seller who claims the reading is true, but it’s not so. What can Los Altos motorists do?

First, you can go to www.CarFax.com, where for a small fee, they’ll give you a comprehensive vehicle history search on your sedan, showing local Los Altos, CA ownership history, accident reports, total-loss events, manufacturer buybacks, Lemon reports and warranty status.

Los Altos motorists can get a mileage history by checking with the local CA DMV (or wherever you happen to be) and other verified sources looking for inconsistencies in the mileage reported when the car’s bought and sold. If there are signs odometer rollback, now you’ll now.

If so, proceed with caution. Or, negotiate a lower price. Or just walk away. There’s always another.

Good day to all, Cayenne here and today we’re going to be talking about serpentine belts for our Los Altos, CA customers. Let’s start by talking about the accessories that are driven by the serpentine belt. First is the alternator. That’s the key device that makes electricity to power the sedan and recharge the battery. Then there’s the air conditioning compressor that makes cool air for you while you're driving around CA in the summer.

The power steering and power brake pumps are driven by the serpentine belt in most Los Altos motorists' vehicles. Those pumps provide vital pressure that assists your steering and braking.

In many sedans, the water pump is driven by the serpentine belt. The water pump is what circulates the coolant that protects your engine. In some cars around Los Altos, CA, the water pump is driven by the timing belt.

The radiator cooling fans on some sedans are also driven by the serpentine belt. Some have separate electric motors. That’s really a lot of vital work for one belt.

But modern engine design has a single belt that snakes around the front of the engine and drives most if not all of these accessories. Serpentine belts do a lot of key work, but they’re tough and can last Los Altos car owners for thousands of miles.

Just how long will they last? That’ll vary for each individual car in the Los Altos, CA area. Your vehicle manufacturer will have a recommendation for when it should be changed, but it could need it sooner. The good news is that a visual inspection at Allied Auto Works can detect a belt that’s getting close to failing.

Your personal and trust Allied Auto Works service specialist can look at the belt: if it has more than three or four cracks per inch, it needs to be replaced. A deep crack that’s more than half the depth of the belt - replace. Frayed, missing pieces, a shiny glazed look? Toss it.

What’s involved in replacing the belt at Allied Auto Works? First the old belt is removed. Then a new one is fitted around all the pulleys for the accessories and the drive. There’s a special pulley called a tensioner.

This pulley is mounted to the engine block with a spring loaded arm. Its essential job is to apply the correct amount of tension to the belt to keep it from getting loose and maybe slipping off. Because the spring in the tensioner pulley wears out, AutoNetTV and the automotive professionals at Allied Auto Works recommend Los Altos auto owners replace them at the same time as the belt. It just makes sense.

What are the warning signs that there’s a problem with the serpentine belt? You may hear a squealing sound from under the hood when accelerating around our Los Altos streets. A loose belt might give you a slow, slapping sound.

What do you do if your belt breaks? If you’ve actually had that happen on a busy Los Altos expressway, it can be a little scary. The first thing Los Altos car owners usually notice is that they have no power steering or power brakes. Don’t panic – you can still steer and brake, but you’ll have to do the work. It’ll be harder to steer and you’ll need more time and effort to stop, so plan accordingly.

Your dashboard will light up will all kinds of warnings. You’ll see a warning about your cooling system if you have a water pump that’s driven by the serpentine belt. This is critical because without your cooling system working, your engine will overheat. If you don’t stop you’ll have massive engine damage, maybe to the point that you need a new engine. Open your windows and turn the heater on full blast to provide a little engine cooling. Pull over as quickly as you safely can!

The battery light will come on because the alternator isn’t working. If your car’s water pump isn’t driven by the serpentine belt, you’re not in danger of overheating so you can drive a little further if necessary. But the battery will run down to the point where the car will just shut off. You don’t want that to happen while you’re driving in our local Los Altos, CA traffic.

Remember, Los Altos car owners can avoid this stressful scenario if they replace their sedan serpentine belt on schedule. Ask your personal and trust Allied Auto Works tech to check your belts and hoses from time to time so you can take care of them if they need to be replaced prematurely.

Allied Auto Works
2073 Grant Road & 1540 Miramonte Ave
Los Altos, CA 94024
650.968.7227-Grant Rd.  650.968.7228-Miramonte

Hello, Cayenne here on this hot day in Los Altos and its all about fuel,

Los Altos car owners know that engines need to burn fuel to operate. Fuel is pumped from your fuel tank to your sedan engine where it is squirted—or injected—into your engine’s cylinders. This is the function of the fuel injectors.

There are two ways to inject fuel into an engine. Fuel needs air to burn, so in the first method, fuel is injected into a port and allowed to mix with air and before it is drawn into the cylinders. In the second method, fuel is injected directly into the cylinders and mixes with air after it enters the sedan engine.

Direct injection engines burn fuel more efficiently than conventional sedan engines. Some models can deliver the power of a V8 with the economy of a V6.

For example, in one family of engines, the conventional version (a V6) delivers about 250 horsepower. The direct injection version delivers over 300 horsepower and gets about the same gas mileage. The turbocharged version delivers 350 horsepower.

Why the big difference in power? Direct injection systems allow fuel to be squirted into the sedan engine at hundreds of times the pressure of a conventional engine. This atomizes the fuel better (breaks it down into tinier droplets), which means more of it gets burned, which translates to more power for your engine. It also results in cleaner emissions.

Fuel injectors are precision instruments. They have to deliver the right amount of fuel at exactly the time the sedan engine needs it. They are also engineered to inject fuel with a specific spray pattern. This spray pattern allows for maximum fuel efficiency and proper atomization. Direct injection engines require a much higher degree of precision than conventional engines. For this reason, they are equipped with more sophisticated computers.

When fuel injectors get dirty, their precision drops off. The spray pattern won’t be precise, and the timing of fuel delivery may be off. This decreases fuel efficiency and gas mileage as well as delivering less power to the engine.

Los Altos car owners should understand that fuel injectors are not cheap to replace. Direct injection fuel injectors are even more costly. And we’re talking a mortgage payment to buy a set of new fuel injectors for a diesel engine.

So keeping your fuel injectors clean is just good auto advice. The best way to do this is to change your air and fuel filters regularly and practice other habits of good car care and preventive maintenance. Cleaning additives in your fuel can also help.

If you do end up with gum or varnish in your fuel system, you’ll need a professional fuel system cleaning. This will clean out your whole system, including the injectors. The good news is that with proper maintenance, Los Altos drivers will enjoy better fuel economy and their fuel injectors will last for a long time.

Cayenne here and people in Los Altos have been hearing a lot about higher oil change intervals these days. Maybe you're wondering: What are the key issues?

Some new vehicle manufacturers in Los Altos are now recommending much higher oil change intervals than they have in the past. As much as 5,000 to 8,000 miles or more. This practice came under scrutiny when four of the largest new car manufacturers announced that owners like those in Los Altos were experiencing engine damage resulting from these higher oil change intervals.

The manufacturers' standard oil drain service for particular vehicles was scheduled at around 7,500 miles. People following these recommendations were experiencing engine damage. It turns out that oil sludge was building up. This caused small oil passages to clog and engine parts to fail.

What causes oil sludge? It's a factor of time and mileage. There are hot spots in every engine that cause oil burn off that leads to sludge. Also, water from normal condensation can build up in the oil. This water also creates sludge. Severe driving conditions lead to more rapid sludge formation.

Visit Allied Auto Works in Los Altos, CA 94024

Severe driving around Los Altos includes short trips under four miles or trips under ten miles in freezing conditions. The engine just doesn't get warm enough for the water in the oil to evaporate.

Severe conditions are at the heart of the problem. Stop-and-go driving, towing, dusty conditions, heavy loads, very hot or very cold temperatures, a car top carrier – these are all conditions that would suggest that the severe service schedule should be considered.

The severe service schedule has much shorter oil change intervals. People in Los Altos just need to honestly evaluate how they drive to determine if they should change their oil closer to the severe service schedule, or to the standard schedule.

Some types of sedan will give oil change reminders. But it's important to know how that reminder is determined. For some, the reminder simply comes when the standard mileage interval has rolled around. Others use a computer algorithm that takes into consideration the number of cold starts, trip length, engine temperature and so on. It's programmed to approximate where on the standard/severe service spectrum you fall. Some more expensive vehicles actually have sensors that test the cleanliness and effectiveness of the oil.

For the rest of us, better safe than sorry should be the guiding principle. Talk with your Los Altos service advisor at Allied Auto Works and work it out together. Find out what kind of oil the factory sends out in your vehicle. Sometimes it's a premium grade that costs more than standard oil – but it may be what's needed to meet a higher factory recommended interval.

If you're realistically conservative, standard grades of oil will take care of you year after year. If you want to push the limits, ask for a premium grade oil to give you extra protection.

So, what happened with those manufacturers with the problems from higher oil change intervals? They ended up extending the engine warranty for parts that were affected by oil sludge. But they had a stipulation – they lowered the oil change interval and the vehicle owner had to provide proof of oil changes at the new lower interval to keep the extended warranty.

Til next week this is Cayenne.

Every Los Altos car owner who has taken their car in for an oil change has been told that their engine air filter's dirty.

Hi it is Cayenne again and we are talking dirty, I mean air filter dirty.

Here’s what goes into the determination of when to change the filter: First, your sedan owner’s manual will have a recommendation of when to change the filter. Second, a visual inspection by your Los Altos technician may determine that your filter it is visibly dirty and needs to be changed.

So between your owner’s manual and your Los Altos technician’s inspection there’s really no guesswork involved for Los Altos car owners.

Now, most air filters purchased in Los Altos, Cupertino, Sunnyvale, or Mt. View don’t cost a lot to replace. It’s just that CA people hate getting caught with an unexpected expense. On the plus side, though, changing a dirty air filter at Allied Auto Works can often save enough on gas to pay for itself before your next oil change in Los Altos.

Think about a dirty furnace filter in your Los Altos home. When it’s all clogged up, enough clean air can’t get through. In your sedan, that means that your engine can’t get as much air as it needs to burn the fuel efficiently. So it makes do with less air and has to use more pricey CA gas to move your vehicle around Los Altos roads.

Your sedan actually needs about 12,000 gallons of air for every gallon of gas it burns. Engine air filters don’t cost much in Los Altos at Allied Auto Works. When it’s time to change yours, just get it done. You’ll get better gas mileage, have better performance and protect your sedan engine.

This is Cayenne educating you the consumer.

Cayenne here and well it's Friday and here is today's advice about Timing Belts,

Your engine is like a finely choreographed dance. All the parts have to work together. If the timing is off at the ballet, dancers crash into each other and fall down. It the timing is off in your engine, it may not run at all. One of the most intricate dances in your engine, has to do with the combustion cycle.

Your sedan engine has cylinders in which a piston travels up and down. At the top of the cylinders are valves open to bring in the air and fuel. And there are valves that open to let out the exhaust after the fuel has been burned.

Call Allied Auto Works at 650.968.7227 or 650.947.7228 for answers about your timing belt, or drop by our Los Altos CA service center on 2073 Grant Road, 94024 or 1540 Miramonte Ave., 94024

It's critical that the values be timed to open and close at precisely the right time in the combustion cycle, or the engine will run poorly or not at all.

The timing belt is responsible for rotating the shafts that control the valves. It's vital and precision work. Timing belts are made of very tough flexible material. They can last a long time. But they eventually wear out and can break. The consequences can be disastrous.

In some engines, the valves actually protrude far enough into the cylinders that they could come in contact with the piston. If the timing belt breaks, the pistons will smash into the valves. Valves get bend or broken. If the engine is spinning fast enough, the broken parts will shred the cylinder head as well. Repairing this damage can cost several thousand dollars.

It's a sad day when this happens; especially since it usually can be avoided. Manufacturers have issued recommendations for when you should replace your timing belt. For some engines, it's at 60,000 miles. For others it's at 90,000 miles or more. If you're approaching 60,000 miles, or have passed it, make sure you check your owner's manual or with your Los Altos CA auto service advisor at Allied Auto Works for when the timing belt should be replaced. Don't let this one slip by.

Now some timing belts are visible and can be inspected. Others are hidden under a protective cover and are hard to get to. Some timing belts also drive the water pump. If you have a leaky water pump, the coolant will contaminate the timing belt and could make it fail sooner. So if you have this kind of engine, get it in to Allied Auto Works for an inspection right away if you have a coolant leak.

Most people in the Los Altos area with this engine design end up with a new timing belt when they replace the water pump. And when you're having your timing belt replaced on schedule, check with your Los Altos CA auto service advisor at Allied Auto Works to see if it makes sense to install a new water pump, even if it isn't currently having problems, since most of the labor is already being done any way for the timing belt replacement.

As a heads up; larger engines will often have metal timing chains rather than belts. The chains don't need to be replaced like belts.

We've already told you how very expensive it can be to get your car running again after a timing belt fails. You also need to know that replacing the timing belt is very labor intensive and is one of the most costly maintenance services you will have. So if you will be at the point where your timing belt should be replaced in the next year or so, ask for an estimate from Allied Auto Works in Los Altos CA so you can begin to prepare for the expense.

We at AutoNetTV are committed to helping you make your driving experience as safe and economical as possible. Allied Auto Works, your Los Altos service center, can be a valuable partner. Please take advantage of their knowledge and experience, and check out http://AutoNetTV.com for more great auto tips.

Have a great weekend and till next week, this is Cayenne.

Cayenne here with myths from the bone pile,

Sometimes we hear Los Altos auto owners say, "What's up with all this maintenance stuff? Modern cars just don't break down." While it is true that today's cars and trucks are extremely reliable, they are also becoming increasingly complicated and use more exotic materials than ever before. All that complexity demands higher tolerances for everything. For example, most Los Altos auto owners don't realize how high tech automotive fluids have become. Fluids like, engine oil, transmission fluid, coolant and brake fluid.

Did you know that a modern engine would not run for more than a few months using motor oil formulas from 30 years ago? Today's automotive fluids contain a much higher percentage of additives to protect your vehicle's components from premature wear and corrosion. Time and miles march on for all of our cars. Please don't think we're using scare tactics to get you to take care of your maintenance - but here are some personal stories from AutoNetTV staff members to emphasize and show how critical it is to get things done when they are due. Names are withheld to avoid embarrassment to those who should know better. Even though they should know better, it usually comes down to real life: time and income. But they are tales of a stitch in time saves nine.

The first comes from a staffer who bought a used pick-up truck for his son. The oil was clean and all the fluids were topped off. A short time later, the truck overheated on a highway in CA and shut down. The repair shop diagnosed the problem: the radiator pan was corroded and dumped the coolant. Even though the coolant level was correct, it was clear that the coolant had never been completely replaced - just topped off from time to time. While this kept the engine cool, all of the anti-corrosion additives had worn out; the coolant became acidic and ate through the radiator pan. The cost: hundred of dollars and four days in the shop. This demonstrates the need to get your coolant exchanged on schedule.

Another story involves the true cost of skipping an annual inspection. Our staffer took his SUV in for the CA safety inspection to renew his registration. At the Los Altos inspection station, he learned that the law had changed and that his newer rig only required an inspection every two years. He was very happy to save the money. The problem was, his rear brake pads were very worn. Two months later, it was bad enough that he could hear the grind - over the radio, DVD player and the kids. He took it in to get the bad news. Both of the rear brake rotors were damaged. The left one could be resurfaced. The right had to be replaced. So saving a little money on his safety inspection turned into an extra $500 over what brake pad replacement would have been. Moral of the story for Los Altos car owners: don't skip your vital annual inspections. The irony is that many Los Altos service centers would have done a brake inspection for free.

Next: a teenage daughter and a curb. Daddy's little princess smacked a curb when she turned into a shopping center and popped the tire. The problem came when Dad didn't get an alignment. The impact was hard enough to ruin the tire - so it was powerful enough wreck the alignment. But instead of an alignment after the first tire, Papa ended up buying a second tire a few months later - and then an alignment.

Situation: son and wife with cars from the same auto manufacturer with essentially the same engine. Our staffer checked the son's maintenance schedule and saw that it needed a timing belt replacement at 90,000 miles/145,000 km. He had it done - it cost several hundred dollars. His wife's car had about 60,000 miles/97,000 km, so it should be ok for a while. Right? Wrong. The problem was that the wife had the turbo charged version. Its belt was scheduled for replacement at 60,000 mi/97,000 km. At 63,000 mi./101,000 km, the belt snapped on the interstate. The valves all crashed down into the cylinders at high speed and the entire head was shredded and had to be replaced. The cost: several thousand dollars. Does he wish he had checked the auto maker's maintenance schedule? You bet he does - every time he passes a big-screen TV.

The team at Allied Auto Works in Los Altos recommends taking care of little things before they become big things. And when you take care of the little things, you can make your car run better and is more economical to operate in CA. Remember to save those maintenance records. It'll show potential buyers that you've taken care of your vehicle and it will help you get a better price. Or when you buy a used car, check those records. If there aren't any, assume that the maintenance hasn't been done and take it to your Sunnyvale or Mt. View service center or Allied Auto Works in Los Altos for an inspection. Take care of unperformed critical routine maintenance sooner rather than later.

Allied Auto Works
2073 Grant Road & 1540 Miramonte Ave.
Los Altos, CA 94024
650.968.7227 & 650.947.7228

and this is no myth.......Cayenne

Hi Cayenne here, do you have blind spots?????

All Los Altos car owners have blind spots – and no, I'm not talking about the fact that you really don't sing like Adele. I mean the areas of the road that you can't see when you're driving around Los Altos.

First let's talk about our own blinds spots, and then we can talk about others...

To begin, we can greatly reduce blind spots by properly adjusting our mirrors to give the widest coverage possible. Make the adjustments in your sedan before you start to drive.

First, Los Altos auto owners should adjust their rear view mirrors to give the best possible view directly to the rear of their sedan. Los Altos folks don't need it to get a better view of either side of the car, the kids in the back seat or their dazzling smile. It's pretty simple, the rear view mirror should reflect the rear.

Next, lean your head until it almost touches the driver's side window. Adjust your side mirror so that you can just barely see the side of your car. Now, lean your head to the middle of the car and adjust the outside mirror so that you can barely see the right side of the car.

When Los Altos car owners adjust their mirrors this way, they'll have maximum coverage. Of course driving is a dynamic process – things change every second on Los Altos roads and busy interstates. So it's wise to take a quick look to the side when passing to make sure that another sedan hasn't moved into an area you couldn't see in your mirrors.

Depending on the kind of vehicle you drive (sedan?), you may still have some blind spots. All vehicles have an area behind them that's blind when backing up. The bigger the vehicle, the bigger the blind spot. A pick-up or SUV can hide a small child – an RV, bus or tractor-trailer can hide an entire vehicle. So be careful out there on our Los Altos streets and in your driveway at your Los Altos home!

As you drive around the Los Altos area, avoid staying in other auto owners' blind spots. You can't count on them to be watching their mirrors and looking out for you.

Let's talk about safely sharing our CA roads with heavy trucks and buses. In crashes involving a truck and car, the driver of the car is to blame for about 40 percent of the accidents. But 78 percent of the fatalities are with the car. The laws of physics are against the smaller vehicle, so it is vital for Los Altos auto owners to take extra precautions around trucks and buses.

Heavy vehicles have huge blind spots: to the rear, on both sides and up front. They also can't maneuver like a car. They take twice as long to stop and need twice as much space as you do in your sedan or other type of car. You need to keep wide margins when driving around one of these big rigs on Los Altos area interstates.

Here are some tips for passing a heavy vehicle in the Los Altos area:

Avoid the blind spots. If you can't see the Los Altos motorists's face in one of his mirrors or in a window, he cannot see you!

Don't follow too close. If you can't see one of the truck's mirrors, you're too close.

Make sure there is plenty of room to pass. Trucks are long and take time to get around. If you're on one of our local Los Altos, CA two-lane highways, wait for a passing zone.

Don't linger when passing. Because the blind spots are so big on the sides, you want to get through them quickly. If you can't pass quickly, drop back.

Pass on the left whenever possible. A trucks' blind spot is much larger on the right.

Be attentive and wear your seat belt while driving anywhere around Los Altos, even for short drives. Don't be aggressive when driving around trucks. Because of their size, they appear to be going slower than they really are. Cutting it short around a truck could be disastrous.

Use your turn signals when starting to pass. Once you can see the full truck in your rear view mirror, it's safe to signal and move over. It's important not to cut it short or slow quickly when you pull in front of a truck.

Be careful passing a truck at an intersection in Los Altos. Trucks need to turn wide to maneuver through Los Altos streets. Squeezing between a truck and the curb could put your car in your Los Altos body shop or Allied Auto Works. Look for the truck's turn signals.

The team of automotive professionals at Allied Auto Works want you to watch those blind spots – but feel free to sing in the shower all you want.

Allied Auto Works
We're on 2073 Grant Road and 1540 Miramonte Ave in Los Altos, CA (94024)
Call us to make an appointment at 650.968.7227 (Grant) and 650.947.7228 (Miramonte)

This is Cayenne checking out til next week.

Good Day, it is Cayenne and we are barking about the right fluids for your vehicle.

Los Altos drivers' current vehicles have over a century of engineering behind them. They have evolved into complex and powerful machines. Developments in their engines, however, have coincided with advances in many other vehicle components, including the fluids.

It’s critical for Los Altos motorists to always use the right type of fluid for their sedan. Your service advisor and your owner’s manual are resources for auto advice on exactly what types of fluid your vehicle needs. Improper fluids can damage your vehicle and void your warranty.

Some of the fluids that have changed significantly in recent years are cooling system fluid, brake fluid, transmission fluid and motor oil. Each of these comes in many varieties now, and it’s critical to know exactly which one your sedan needs.

Cooling systems were once made of iron, steel and rubber. One coolant could be used to protect all of these materials. But new cooling systems have components made from a variety of metal alloys and several kinds of plastic, and coolants now contain additives that protect these various materials from corrosion. Since the materials vary among vehicle manufacturers, they require different additives, which means there are now a number of coolants on the market. The type of coolant your sedan needs depends on the materials used in its cooling system.

Most vehicles used to require Dot 3 brake fluid. But now many vehicles need Dot 4 or Dot 5. Some Los Altos motorists mistakenly think the higher numbers reflect an increase in grade—that Dot 4 is somehow better than Dot 3. But the truth is, the numbers represent variations in formulation. The different formulas have evolved to meet the demands of newer and better brake systems. For a long time, transmission fluid came in two varieties: regular and friction-modified. But transmissions have come a long way recently, and so have the fluids that protect and lubricate them. There are several new types of fluid on the market, but your sedan is designed for just one of them.

Of all the automotive fluids, motor oils have experienced perhaps the greatest advances in engineering and technology. A number of new weights and formulations have recently been developed to meet the needs of modern engines, which have more parts and tighter tolerances than ever before. Engines have become more sophisticated and complicated, but they have also increased in power and fuel efficiency. Despite these changes, Los Altos auto owners still need them to be highly durable.

That’s the job of motor oil. Motor oil still has to perform its original, vital function—lubricating and protecting the engine. It is formulated to help clean the engine as well. Modern motor oil also has to be thin enough to penetrate small engine passages yet still be resistant to vaporization.

Specialized motor oils have also been developed for high-mileage vehicles. If your sedan has 75,000 miles or more on it, you might consider switching to one of these motor oils. They contain extra detergents that help clean older engines and key additives that condition seals and gaskets that can become brittle with age. High-mileage motor oils come in weights and types just like regular motor oils, and Los Altos car owners should match the proper weight and type of high-mileage oil to their vehicle in the same way you would regular motor oil.

Over time, vehicles have developed in complexity and variety, and their fluids have developed as well. Each vehicle is matched to a set of fluids that meet its specific requirements. CA vehicle owners should take care to learn their sedan’s fluid requirements before topping off at home. A large part of preventive maintenance for Los Altos auto owners is making sure your vehicle’s fluids are clean and adequate, but they must be the proper type as well. As our sedans become more sophisticated, car care becomes more sophisticated as well.

Learning about proper fluids for your vehicle will help you maintain its performance and prolong its life. Talk or bark to us at Allied Auto Works in Los Altos.

Have a great day,

Cayenne

Hi Los Altos motorists, it's Cayenne,

Let's talk fuel injectors. A fuel injector is a valve that delivers fuel to a vehicle’s engine. It has to deliver the precise amount of fuel, to precisely the right place, precisely when the engine needs it. The fuel also has to be mixed with air before it can burn in the engine.

Fuel injectors are engineered to spray fuel in a specific pattern into the engine. (The pattern varies by engine type and design.) In order to achieve these spray patterns, the fuel must be pressurized.

The pressure in a fuel injection system varies depending on its type. Many gasoline sedan engines use port injection systems, which operate with a pressure of 60 pounds per square inch. Newer direct injection systems operate at 10 to 30 times that pressure. Some diesel passenger vehicles have fuel injectors that operate at 30,000 pounds or more per square inch.

Vehicles have one fuel injector for each cylinder in the engine. Your vehicle’s control computer constantly monitors the engine and various sensors in the vehicle and adjusts the fuel injectors accordingly so that they can deliver the proper amount of fuel to the engine. As you can see, fuel injectors are a sophisticated and vital part of your vehicle’s engine. Because fuel injectors are such precision instruments, dirt and contaminants are a serious detriment to their performance. When an injector gets gummed up, it affects the pressure, pattern and timing of the fuel delivery. The result is a decrease in fuel efficiency and loss of engine performance for Los Altos car owners.

So it’s to Los Altos auto owners' advantage to keep their fuel injectors clean. That starts with keeping the fuel in your tank clean. High-quality fuel contains detergents and additives that help clean your engine. Brand-name fuel companies also deliver a more consistent quality of fuel to Los Altos car owners than do bargain Los Altos area service stations.

The second way to keep your injectors clean is to keep your fuel filter clean. This filter screens dirt and rust out of the fuel as it travels from the tank to the engine. If the filter clogs up, fuel will bypass it and carry its load of dirt into the engine.

Los Altos car owners should check their owner’s manual to find out how often they should change their fuel filter. This should be part of your regular preventive maintenance. Also, remember that if you use bargain-brand or low-grade fuels, or if you drive an older vehicle between Los Altos, Cupertino and Sunnyvale , your filter will need to be changed more often.

You can also purchase cleaners at Allied Auto Works that will protect your fuel injectors. These cleaners are added to the fuel tank. They work best at preventing build-up in your fuel injectors and can clean up small amounts of carbon, gum and varnish. But they won’t be able to clean a fully gummed-up injector. Read the labels before using any of these products for full directions on their use. If your fuel injectors are gummed up, you can get a professional deep cleaning service at Allied Auto Works in Los Altos that will result in better gas mileage and improved vehicle performance.

Good car care will prevent serious damage to your fuel injector system. And this is one system that you want to keep in perfect condition.

Well that is all for today, till next time this is Cayenne.