Los Altos Auto Repair

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.

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. 

Hi it is Cayenne and Clean Fuel makes a happy car and a happy dog.  Let's learn.

If the fuel system in your sedan is dirty, you will be hurting your gas mileage and losing performance as you drive around Los Altos, CA.

Unless they drive a vintage car, Los Altos auto owners have fuel injectors which need to be properly maintained. That is why your sedan owner’s manual has a schedule for cleaning your fuel injectors and other parts of your fuel system.

Your personal and trust service advisor at Allied Auto Works in Los Altos has the tools and chemicals to do the job right. Allied Auto Works uses a process that gives your car a deep, professional fuel system cleaning. The particles, gum and varnish that build up in your fuel system are removed so that it can run cleanly and efficiently.

After a professional fuel system cleaning at Allied Auto Works, you’ll notice more power, improved fuel economy and reduced exhaust emissions. AutoNetTV strongly recommends you follow your car makers fuel system cleaning service recommendations to keep your sedan running strong.

Los Altos motorists don't need the added expense of replacing a fuel injector that’s been damaged by neglect. Check with your personal and trust Allied Auto Works service advisor and see when your car is scheduled for an important fuel system cleaning.

Well I do not know about you, but I want a clean car to drive and be in,  Happy Dog    

Hello Cayenne here again and today it's all about Diesel, 

At Allied Auto Works we hear from a lot of people who are excited about the new diesel engines that will soon be available in passenger cars and SUV's. But our CA friends are often curious about the preventive maintenance requirements. People may not know that diesel engines have long been used extensively in Europe and Asia. In fact, in some markets, there're nearly as many diesel powered passenger cars as there are gasoline.

Here's who's announced or is expected to announce new diesels for North America: BMW, Mercedes, Audi, Volkswagen, Nissan, Honda, Toyota, Hyundai and Subaru. Of course, the US auto makers will be expanding their diesel offerings as well. Diesels will become a very big deal here in CA.

You may ask, why has it taken so long getting to CA and North America? There are a bunch of reasons like fuel tax policies and such, but the biggest hurtle was that CA diesel fuel had a high sulfur content – too high for the latest generation of highly refined diesel engines. Recent government mandates to remove sulfur now opens up CA to the engines the rest of the world's been enjoying for a long time.

Why are diesels so popular worldwide? Well, for starters, diesels get up to 30% better fuel economy than gas engines. And they last a lot longer. And modern diesel engines are refined, quiet and powerful – and there's none of that black smoke we used to see.

Some people may think that diesels create more pollution. But, you need to rethink diesels. Environmental pollution standards for diesel cars and light trucks are scheduled to be as strict as they are for gasoline vehicles. A modern diesel engine is as clean as a gas engine.

You may also have heard a lot in the news about bio-diesel. The exciting thing about diesels is that they're not limited to fossil fuels. They can run on fuel made from vegetable oil. There are refineries that make diesel fuel from cellulosic waste like woodchips from lumber mills. There's even this cool new process where a special strain of algae is used to convert carbon dioxide, water and sunshine into bio-diesel. That's still a ways off, but you can see that diesel can become a sustainable source of fuel.

And, there are not a lot of trade off's with diesel in terms of performance. A modern passenger car diesel is very smooth, quiet and quick. Most folks wouldn't notice any difference. For those who tow trailers and haul heavy loads, diesels will be an improvement.

Now diesel engines are heavy duty, so they cost more than gas engines. But they get better fuel economy – so the break-even point is largely dependent on the difference between CA gas and diesel prices at the pump and how many miles you drive. And diesels have a higher resale value.

Now, let's get back to diesel maintenance. You have to keep in mind that most of the new diesels are just coming in, or will be over the next couple of years, so we don't have the maintenance schedules to make direct comparisons yet.

But going off what we already have in CA, we can expect fluid drain intervals to be similar to gasoline engines. Diesels do require very clean fuel, air and oil, so their filters are much higher capacity than gasoline filters and cost more. The engine air filter needs to be changed more frequently as well.

Repair costs are similar. As with gasoline engines, proper maintenance is the key to long engine life and to avoiding repairs. So pretty much what we have come to expect with gas vehicles; coolant system service, transmission service, power brakes, power steering, differential, filters, fuel system, and so on. And the payoff for you, if you're the kind that likes to keep your vehicles for a long time, is that a properly maintained diesel engine can last for hundreds of thousands of miles.

This is Cayenne and have a great day,

Happy New Year!  Today we are barking about saving gas and who do not want to know how to do that with the price of gas these days.  

No one in Los Altos, CA likes to spend a chunk of change at Los Altos gas pumps. Rising CA fuel prices, however, have spurred Los Altos drivers to focus on how to improve their gas mileage. North Americans literally drive billions of miles less each month during times of high fuel prices. But we still need to drive (we are car-loving Americans, after all!), so it makes sense to try and increase our fuel economy however we can.

Let's look at a real life example of one of our AutoNetTV producers. He has one of those really big SUVs. Lots of kids and horses to haul around, you know. His family was planning a four day camping trip. Here's what he did to cut his fuel costs:

First, he installed a new, high flow engine air filter. Then he had his service center change his oil, flush his cooling system and service his front and rear differentials along with the transfer case. He also had a fuel system cleaning, replaced his PCV valve and breather element. He also made sure his tires were up to the recommended pressure.

Now this cost several hundred dollars. But keep in mind, it all needed to be done anyway – it was all scheduled, and some of the work was overdue.

So he headed out, loaded with nine people and pulling a ton of trailer with everything needed for four days of camping. When the trip was over, he tallied his fuel efficiency.  Turns out, he got the best fuel economy on that vehicle up to that point. It had improved 25 percent! He saved $48.00 on that trip alone. And the savings keep on coming every day.

Here's a quick summary of what you can do to save fuel in Los Altos, CA. First get caught up on your routine maintenance. Nearly every scheduled service item can boost gas mileage. If it's time for a tune-up, git'er done at Allied Auto Works. That's a big item.

If your check engine light is on, have your personal and trust Allied Auto Works tech figure out why and fix it. Check engine problems can be real gas wasters.

Proper tire pressure and wheel alignment can really help as well. Try not to carry around a bunch of stuff. An extra hundred pounds can cost a mile per gallon.

Now you may not want to hear this, but the single biggest fuel waster for most Los Altos folks is their right foot. Zooming away from stop lights and hot rod lane changes really waste fuel. Take it easy on CA interstates and city streets: don't speed and plan ahead.

Finally, you may have noticed that we haven't mentioned any magic pills or devices that will double your mileage. That's because there aren't any. Some may help a bit, but there are a lot of "miracle fuel saver" scams in CA. Don't shell out any money to swindlers, you need it to buy gas!

Do some research and check with your tech at Allied Auto Works before spending your hard earned cash.

Till next week, this is Cayenne your Allied Auto Works Dog Advisor

Having trouble with your fuel system? Bring your sedan into Allied Auto Works for a check up.  Tell them Cayenne sent you.
2073 Grant Road  or 1540 Miramonte Ave
Los Altos, CA 94024
650.968.7227 (Grant) & 650.947.7227 (Miramonte)

In today's Allied Auto Works auto post from Cayenne, she is talking about fuel system cleaning. The first thing to know is how important it is to have a clean fuel system. Los Altos car owners need fuel to go, and the cleaner the fuel system, the more efficiently the fuel will burn. That means more power and better fuel economy.

A clean fuel system saves money at the pump. Cayenne says, it all starts and ends at the pump.  One of the most important things Mt. View car owners can do to keep their sedan fuel system clean is to buy good quality gas. Major brands have detergents that keep gum and varnish from rapidly building up in the fuel system.

So buying cheaper gas in Los Altos can actually cost more in the long run. Cayenne knows most cars on CA highways are more than five or six years old. That means they've had time for some dirt and rust to start accumulating in the fuel tank. This junk needs to be filtered out of the fuel before it hits your sedan engine. That's the fuel filter's job.

When the fuel filter is clogged, the dirty fuel will bypass the filter and go on up to the engine where it can clog fuel injectors and get into the cylinders. That could do some damage. So Cupertino auto owners should have their fuel filter changed when recommended. Check your owner's manual or ask your personal and trusted Allied Auto Works technician if your fuel filter is due for replacement.

The fuel then goes up into the throttle body. This is another area where varnish and gum can accumulate. A professional fuel system cleaning at Allied Auto Works in Los Altos will use a combination of special cleaning chemicals and old fashioned swabbing to clean out the throttle body. Now, the fuel injectors are the last stop in the fuel delivery system.

Cayenne wants you keep those fuel injectors clean. The fuel injectors need to deliver a precise amount of fuel, at exactly the right time, in a particular spray pattern. They just can't do that if they're dirty. Dirty fuel injectors really rob power and hurt gas mileage.

It is important for the fuel system proper, but there are a couple other things that will help keep your sedan engine clean as well. Of course, air is mixed with the fuel before it's burned. Dirty air means dirt gets into your engine, so you need to replace your engine air filter when it's dirty.

The PCV value routes unburned fuel that escapes into the lower engine back up into the intake system to be burned. A sticky PCV valve needs to be replaced at Allied Auto Works to make sure that system is working properly and the breather filter needs to be replaced if it's dirty as well.

Do all these things and your sedan engine's air and fuel will be as clean as possible. You'll get much better fuel economy and better power.

Till next week,

Cayenne      

Cayenne wants to know if you have found yourself in the following situation: You go to get your oil changed and the service adviser at Allied Auto Works recommends you get a new engine air filter. You say yes, but because you didn't know what an air filter is or what it does, but you were too embarrassed to ask.

First of all Cayenne wants you to know, you did the right thing by getting a new one. And, you should never be too embarrassed to ask for more information from any of our Allied Auto Works staff. It's your money and you have a right to understand what you're paying for.

"Let's review what an air filter does" barks Cayenne:  

Air is the focus of this discussion. What is the air like outside in Los Altos right now? Can you see any smog? Is it full of pollen? How about dust? Anyone in CA with hay fever can tell you that there's plenty in the air that you can't see. Well, it's the engine air filter's job to clean that air before it goes into your engine, to mix with the fuel and be burned. Without an engine air filter, the inside of your engine would be extremely dirty from all the gunk that was burned in the cylinders.  

Allied Auto Works
2073 Grant Road
Los Altos, CA 94024
650.968.7227

In fact, for every gallon of gas you burn, your engine needs 12,000 gallons of air. That little filter does a very big job. It's no wonder that the air filter gets dirty and needs to be replaced. Think about a vacuum cleaner. When the bag gets full of dust and dirt, the vacuum doesn't clean as well. It can't move enough air to create good suction. A clogged engine air filter is the same way - the engine can't get enough air to burn the fuel efficiently. That means less power and wasted gas.

That's why your manufacturer has recommended that you change your filter at regular intervals. Of course the conditions you drive in will affect how quickly the filter gets dirty. If you drive where it's very dusty or where there's lots of pollen or pollution, you may need to change the filter sooner. The filter is easy to check visually, so your service technician can quickly make the call. He might recommend immediate replacement, or simply let you know that it is getting close and that you'll need to replace it soon - like at your next oil change.

Because a severely dirty air filter hurts your fuel economy, many people find that a new air filter pays for itself in gas savings before the next oil change. They also make premium air filters that have been proven to increase your horsepower and torque. If more power is important to you, a high performance air filter is some of the cheapest horsepower you can buy.

The better your car breathes, the better it runs - kind of like dogs and people. And don't worry - if you have a question or don't understand a recommendation just Cayenne or better yet stop by Allied Auto Works and talk to Matt or Travis.

From Cayenne's point of view in very simple terms, a fuel injector is a valve that squirts fuel into your sedan engine. Your engine control computer tells the fuel injector how much fuel to deliver as well as the precise time it should be delivered. Of course, Cayenne wants you to know this happens thousands of times a minute in every single fuel-injected car driving down Cupertino, Sunnyvale, and Mt. View interstates.  Cayenne's knows as she loves car rides.

Cayenne says fuel injectors for gas engines are known in the Los Altos automotive community as port fuel injectors because they deliver the fuel to a port just outside the cylinder. The fuel pump provides pressure needed to squirt the right amount of fuel into the engine.

Cayenne has noticed a few auto makers have recently introduced gas direct injection systems on some engines. They are now available at some Los Altos dealerships. These systems inject the gas directly into the cylinders under very high pressure – many times the pressure of port injection systems.

Although more complicated, direct injection technology promises greater power with improved gas mileage for gas-poor Cupertino, Sunnyvale, and Mt. View car owners. CA motorists can expect to see more of it in the future.

High temperatures under your sedan hood and variations in Los Altos gas quality cause fuel injectors to be fouled with wax, dirt, water, additives and carbon. Injectors can become partially clogged, preventing them from delivering the proper amount of fuel at the correct pressure.  You do not want this says Cayenne.

When injectors are dirty, the fuel doesn’t burn as efficiently resulting in poor fuel economy and loss of power. So it’s important for Los Altos car owners keep their fuel injectors clean.  

Cayenne recommends Allied Auto Works service center where they can perform a fuel system service for you in which the fuel injectors are cleaned so that they operate properly and deliver the right amount of fuel at the right time.

Proper maintenance of your sedan fuel system means that you will spend less on gas, enjoy strong performance and prevent costly Los Altos repair bills down the road and Cayenne says that extra money you will save on gas can go towards a nice bone for your dog.

The last new American car sold in Los Altos with a carburetor rolled out of the CA dealership in 1990. Since then, all new vehicles here in Los Altos and nationally have had fuel injectors. In very simple terms, a fuel injector is a valve that squirts fuel into your engine. Your engine control computer tells the fuel injector how much gas to deliver as well as the precise time it should be delivered. Of course this happens thousands of times a minute. Fuel injectors deliver fuel far more precisely than carburetors. That translates into better gas mileage and more power. Virtually all fuel injectors for gas engines are known as port fuel injectors because they deliver the fuel to a port just outside the cylinder. Port fuel injectors operate at about 40 to 80 pounds per square inch of pressure.

A few vehicle manufacturers have introduced gas direct injection systems on some engines recently. These systems inject the gas directly into the cylinders under very high pressure - hundreds of times the pressure of port injection systems. Although more complicated, direct injection technology promises greater power with improved fuel economy, so Los Altos drivers can expect to see more of it in the future.

As you can see, the level of precision required of your fuel injectors is very high. They need to be operating properly in order for your car to run right.

High temperatures under your hood and variations in Los Altos gas quality cause fuel injectors to become fouled with wax, dirt, and carbon. Injectors can become partially clogged, preventing them from delivering the proper amount of fuel at the correct pressure. The design of each engine requires a specific spray pattern from the fuel injector that might be altered when the injector is dirty. When injectors are dirty, the fuel doesn't burn as efficiently resulting in poor gas mileage and loss of power. So it is important to keep your sedan fuel injectors clean.

Skilled service technicians at Allied Auto Works in Los Altos can perform a fuel system service for you. (Visit contact-us.) That is a fuel system service - not just fuel injector cleaning. That is because the fuel has a lot of ways to become dirty or contaminated between the Los Altos gas pump and your fuel injectors. A fuel system service starts with a fuel filter replacement. This filter cleans the gas as it leaves the tank. The various parts of the fuel intake system need to be cleaned from time to time to remove harmful gum, deposits and varnish. Finally, the fuel injectors are cleaned so that they operate properly and deliver the right amount of fuel at the right time.

Your personal Allied Auto Works service specialist uses a process for cleaning your sedan fuel system that includes state-of-the-art cleaning chemicals as well as some old fashioned scrubbing. Proper maintenance of your fuel system means that you will enjoyed improved gas mileage, enjoy strong performance and prevent pricey repairs down the road.