Category Archives: Fuel System
Hello, Boise motorists. Let’s talk fuel filters. Fuel filters clean the dirt, dust and debris out of your fuel. Both gasoline and diesel-powered engines have them. The fuel filter is located in the fuel line between the fuel tank and the engine.
Boise car owners don’t need to filter their fuel because it has lots of grit in it; they need to filter it because it has some grit it in. Any dirt is bad for your engine. The cleaner the fuel, the better an engine will run.
Over time, the small amounts of rust, dirt and contaminants in your fuel settle out inside the fuel tank. After about five years, this can amount to a quite a bit of sediment. This means that as your sedan ages, your fuel filter has to work harder to screen your fuel: more sediment in your tank means more potential for grit in your fuel.
The harder your fuel filter works, the more often it needs to be replaced. Check with your sedan owner’s manual or Napa AutoCare Boise to find out how often it should be serviced and how long you can expect it to last. You should change it before it becomes clogged. Your Napa AutoCare Boise service advisor can help you with recommended replacement schedules.
If your fuel filter becomes clogged, your engine will sputter when you drive at Idaho highway speeds or when you accelerate rapidly. A clogged filter allows enough fuel to run the car at low speeds around town in Boise, but when you need a higher flow of fuel for faster speeds, or if you need a sudden burst of fuel, you just won’t be able to get it through the filter.
A clogged filter is actually dangerous. If you need to accelerate suddenly out of the path of danger, you just won’t have the power to do it.
Fuel filters have a bypass valve. When the filter becomes clogged, the valve allows some fuel to bypass the filter so the engine can keep running – just not enough to be running well.
That means, though, that dirty, unfiltered fuel is entering your engine. Instead of clogging up your filter, that dirt is now getting into your fuel injectors, where it can cause serious damage. Fuel injectors are expensive; fuel filters are cheap. It doesn’t seem like a difficult choice for Boise car owners.
Fuel filters are the epitome of preventive maintenance. They are cheap and easy to change, but neglecting them can lead to costly repair bills. Some fuel filters are inside the fuel tank and cannot be routinely serviced – your fr Napa AutoCare Boise service advisor will be able to tell you if this applies to your vehicle.
Good car care for Boise motorists means following recommended schedules for preventive maintenance, including changing your fuel filters. Take the auto advice offered at Napa AutoCare Boise and in every owner’s manual and have your vehicle regularly inspected. It may save you money by preventing costly repairs, but it will also repay you in improved gas mileage, safety and peace of mind.
Hello Boise motorists! You would never like to drink a glass of mud, right? Well, your sedan feels the same way. It needs a steady supply of clean fuel in order to run well and deliver good fuel economy. The fuel filter’s job is to clean dirt and rust out of the fuel before it gets to your engine. A clogged fuel filter can actually choke off the engine so that it won’t start or run. Some fuel filters have a bypass valve that allows fuel to go around the clogged filter so your car will still run. But, then the contaminated fuel can clog your fuel injectors and allow damaging particles into your engine.
A car with a partially clogged fuel filter might run well around Boise, but sputter and strain on the freeway because it’s starving for gas. There are two things that affect how often you need to replace the filter. They are: where you drive in Idaho and the gas you buy. If you drive a lot on dirt or gravel roads in rural Idaho, your fuel filter will have a harder time keeping the fuel clean.
And, we hate to say it, but buying the cheapest gas from bargain Boise area stations sometimes means dirtier fuel that’ll clog the filter sooner. Major brands tend to be cleaner and certainly have higher levels of detergent additives.
Of course, vehicle manufacturers recommend intervals for changing the fuel filter. But, it’s a little more complicated than that. Some auto manufacturers stopped listing recommended intervals for fuel filter replacement or have very long intervals like every five years or eighty thousand miles. So you may need to look to other sources for recommendations. Cars older than six or seven years are especially at risk because they have had time for dirt and rust to build up in the fuel tank. A clean fuel filter keeps the gas flowing. Even a partially clogged filter puts added strain on the sedan fuel pump. That can shorten its life and result in a significant repair.
As is often the case, spending a little money now on something as inexpensive as a fuel filter can save money down the road. At Napa AutoCare Boise in Boise, we can check your fuel filter. It is better than fixing a burned-out sedan fuel pump or ruined fuel injectors.
Having trouble with your fuel system? Bring your sedan into Napa AutoCare Boise for a check up.
4338 W. Chinden Blvd
Boise, Idaho 83714
In today’s Napa AutoCare Boise auto post, we’re talking about fuel system cleaning. The first thing to know is how important it is to have a clean fuel system. Boise auto owners need fuel to go, and the cleaner the fuel system, the more efficiently the fuel will burn. That means more power and better gas mileage.
A clean fuel system saves money for Boise drivers at Idaho gas stations. We guess you could say, it all starts and ends at the pump. One of the most important things Boise 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 Idaho can actually be more costly for Boise auto owners in the long run. Now, most cars on Idaho interstates 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 be harmful. So Boise car owners should have their fuel filter changed when recommended. Check your owner’s manual or ask your fr Napa AutoCare Boise service professional 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 Napa AutoCare Boise in Boise 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.
It’s important for Boise drivers to 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 fuel efficiency.
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 Napa AutoCare Boise to make sure that system is working properly for Boise motorists 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 efficiency and better power.
For those of you in Boise Idaho who pay attention to these things, you may have been hearing about the new direct injection engines and want to learn more about them. Some deliver the power of a V8 with the economy of a V6.
For example, in one family of engines the conventional V6 makes about 250 horsepower. The direct injection version of the same engine makes over 300 horsepower and gets essentially the same gas mileage. The turbocharged version makes over 350 horsepower.
So what are the differences from a conventional engine?
The core difference is in the fuel injection system. The system most vehicles use now is called a port injection system. The fuel injector squirts fuel into a port just outside the cylinder where it’s then drawn into the engine with the air.
With a direct injection system, the injector squirts the fuel directly into the cylinder. The gain in power and economy come because fuel injected directly into the cylinder during the combustion cycle is burned much more efficiently.
First, the fuel is squirted in at hundreds of times more pressure, so it’s atomized much better and burns cleaner and stronger. The other big advance is in electronics. Faster engine management computers can control the additional precision required to manage direct fuel injection.
Fuel injectors are precision instruments. They have to deliver a precise amount of fuel at exactly the right time. The design of the engine also dictates a particular spray pattern for the fuel. If a fuel injector is dirty or gummed up, it can’t do its job as well. That means less power and worse fuel economy for your sedan and can lead to damaged fuel injectors.
Replacing fuel injectors isn’t cheap. Direct injection injectors are even more expensive because of the extremely high-pressure they use. Same thing for diesel fuel injectors; we’re talking mortgage payment-range to replace a set of diesel injectors.
A professional fuel system cleaning from Napa AutoCare Boise gets out the gum and varnish in the whole system, including the fuel injectors. Keep those injectors clean and they’ll last a long, long time.
With high fuel prices in Boise Idaho comes lots of gas saving advice. Some of it, like what you hear on AutoNetTV, is really great. Some is myth. And some is just designed to prey on Boise Idaho people desperate to save some money on gas.
Does it really make sense? Does it defy the laws of physics?
Do some research on the internet or ask your Boise Idaho service advisor at Napa AutoCare Boise.
There aren’t any magic pills you can drop in your gas tank and the government hasn’t suppressed a device you can clamp on your fuel line to make your car run on air. Not even in Boise!
So next time you get one of those e-mails, check it out with an automotive professional. You’ll get more bang for your buck with an oil change or an engine air filter replacement.
We’re Napa AutoCare Boise, give us a call at 208-323-9292 for good honest advice about your car.
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 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.
So it’s critical to keep your 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 Idaho fuel companies also deliver a more consistent quality of fuel than do bargain stations in the Boise area.
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.
Check your owner’s manual or Napa AutoCare Boise in Boise to find out how often you should change your 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, your filter will need to be changed more often.
You can also purchase cleaners 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 Napa AutoCare Boise in Boise that will result in better fuel efficiency 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.
Boise motorists have probably noticed that the government mandates a lot of equipment on cars: emission devices and control computers; safety equipment like airbags; and crash worthiness requirements. All of this is great for the motoring public in Boise but it does add quite a bit to the price of a new car in Idaho.
Because new cars are more expensive, Boise residents are driving their old cars longer. The average car is now over nine years old. 68% of vehicles on the road have more than 75,000 miles/120,000 kilometers. As cars age, their performance drops, they have difficulty idling for long periods and are more sensitive to weather extremes. Fortunately today’s cars are up to the challenge – but they need a little help to keep on going.
Some owner’s manuals don’t outline service requirements and schedules at higher mileage. Of course, that doesn’t mean it doesn’t have to be done. In fact, it’s more important than ever for Boise motorists to stay on top of routine auto maintenance for cars with more than 120,000 miles/190,000 kilometers. Just extend regular service intervals out: for instance a service that’s recommended every 24,000 miles/38,000 kilometers should be performed at 24,000 mi/38,000 km; 48,000 mi/77,000 km; 72,000mi/116,000 km, 96,000 mi/154,000 km; and on and on.
Because of the additional stress older engines experience, the severe service maintenance schedule may be more appropriate than the regular schedule. Watch for leaks – seals and gaskets dry out over time and do not hold the fluids as well as they used to. If you don’t already have one, it is more essential than ever to get a good service specialist, like any one of the automotive professionals on our team at Napa AutoCare Boise. There are some services and replacements that are scheduled after you put some clicks on the odometer, like timing belts, valve train adjustments, suspension, anti-lock brake service, air bags, etc. And unexpected repairs down the road are just par for the course.
Check for unusual sounds, smells or the way your car feels. These could be hints that trouble is brewing. Better to catch it early before it turns into an expensive repair. Regular wash and wax will help maintain your car’s appearance. One of the things Boise motorists can do to really help a high mileage vehicle is to begin using high mileage formulation fluids. There are special engine oils, coolants, transmission fluids and power steering fluids that are formulated for cars that have higher mileage.
High mileage oil is designed to condition seals and gaskets, reduce wear and avoid premature burn off. Older engines are dirtier inside – and dirty engines contaminate their oil faster. High mileage oil has special additives that clean the engine, removing sludge deposits over time. The result is less stress on the engine, better gas mileage and excellent wear protection. Come into Napa AutoCare Boise in Boise for a checkup.
Studies have even shown that using high mileage fluids early will actually prevent some of the problems of high kilometer vehicles. So once you hit around 50,000 mi/80,000 km, consider stepping up to high mileage formulations. The fluids cost a bit more than standard fluids because of the additional additives, but they can be worth their weight in gold in terms of preventing pricey repair costs down the road.
It does cost more to properly maintain a higher mileage vehicle in Boise – but it’s much cheaper than a new car payment!
Your sedan requires plenty of clean fuel to run. If your fuel contains contaminants, your fuel injectors will eventually become clogged up. When this happens, your sedan engine may not get the proper amount of fuel at the correct pressure to run at peak performance. This hurts fuel economy and performance as you drive around Boise. It can also lead to the buildup of harmful deposits on valves and in the combustion chamber.
That’s why all vehicles, including sedans, come equipped with a fuel filter somewhere between the engine and the fuel tank. The job of the filter is to clean out little pieces of dirt and contamination. The filter captures the contaminants and keeps them out of the fuel stream. Of course, like all filters, it will eventually get clogged up and need to be replaced at Napa AutoCare Boise in Boise .
If your fuel filter is clogged, the sedan engine can’t get all the fuel it needs, and it may sputter at high speeds or quick acceleration. Many fuel filters have a bypass valve that will allow unfiltered fuel through when they are clogged. This keeps your sedan engine running, but doesn’t protect it from contaminated fuel.
You may find that you need to change your fuel filter at Napa AutoCare Boise more frequently as your sedan ages. Over the years, additional sediment and rust accumulates in the fuel tank and can be drawn into the fuel system. Your fuel filter stands guard at the gates to your engine to protect expensive parts and to maintain performance and fuel economy.
Most Boise and Garden City car owners want to save on gas and seek our advice on improving fuel economy. At Napa AutoCare Boise, we are frequently asked, however, if it is really worth the extra effort. Just how much money can Garden City car owners actually save?
The US government has a website dedicated to helping us use less fuel. It presents the cost savings in a way Garden City car owners can relate to and is relevant for all vehicles. Let me give you an example: Having your sedan engine properly tuned, can save up to 4%. If you’re paying three-fifty for a gallon of gas, you could save fourteen cents a gallon.
In today’s Napa AutoCare Boise article, we’re focusing on the things you can do to improve your sedan gas mileage driving around Idaho. We’ll tell you the potential savings per gallon of gas at three dollars and fifty cents, and we’ll show a chart that also shows the savings at three and four dollars.
|DOLLARS PER GALLON||$3.00||$3.50||$4.00|
|TUNE UP 4%||.12||.14||.16|
The next item is replacing a clogged engine air filter. Your engine needs enough air to burn fuel efficiently for the best fuel economy. A clean air filter means you get plenty of air. The fact that the air’s clean protects your engine. That can save you up to ten percent or thirty-five cents a gallon.
|DOLLARS PER GALLON||$3.OO||$3.50||$4.00|
|AIR FILTER 10%||.30||.35||.40|
Fixing a faulty oxygen sensor can improve economy by up to forty percent. That’s a whopping dollar forty in savings per gallon. Bring your car to Napa AutoCare Boise and we’ll check your oxygen sensor.
|DOLLARS PER GALLON||$3.00||$3.50||$4.00|
|FAULTY O2 SENSOR 40%||1.20||1.40||1.60|
Chances are that if your oxygen sensor is kaput your check engine light will come on. Now, there’s any number of things that could cause your check engine light to come on besides oxygen sensor problems. But if it’s on, get it checked out as soon as you can at Napa AutoCare Boise.
Here’s an easy one. Inflate your tires to the recommended pressure. That could save you three percent or eleven cents a gallon. Even a little drop in pressure will bring down your gas mileage, so check your tires every week.
|DOLLARS PER GALLON||$3.00||$3.50||$4.00|
|TIRE INFLATION 3%||.09||.11||.12|
Your sedan manufacturer has recommended a specific weight of motor oil. The recommendation is based on engine design and will give you the best protection. Using a heavier weight could cost one to two percent in reduced gas mileage, or up to seven cents a gallon.
|DOLLARS PER GALLON||$3.00||$3.50||$4.00|
|RIGHT GRADE MOTOR OIL 2%||.06||.07||.08|
Here’s one that’s free: Take it easy when you drive. Aggressive driving (we’ve all seen this on Garden City roads), rocketing away from stop lights, standing on the brakes, punching it for lane changes – really takes a toll on your gas mileage.
Cutting out aggressive driving around Garden City can save five percent or eighteen cents a gallon. Now on the interstate it gets really costly: thirty three percent or a buck sixteen a gallon. Think about that – and leave a little earlier.
|DOLLARS PER GALLON||$3.00||$3.50||$4.00|
|DRIVE AGRESSIVELY – MIN. 5%||.15||.18||.20|
|DRIVE AGGRESSIVELY – MAX. 33$||.99||1.16||1.32|
A related item is exceeding the speed limit. For example, if the speed limit is sixty miles per hour an additional five miles will cost seven percent or twenty-five cents a gallon. Fifteen miles per hour will cost you upwards of eighty cents a gallon.
|DOLLARS PER GALLON||$3.00||$3.50||$4.00|
|SPEED LIMIT – MIN. 7%||.21||.25||.28|
|SPEED LIMIT – MAX. 23%||.69||.81||.92|
The last thing we’ll talk about is excess weight. Our sedans tend to accumulate a lot of things and the weight adds up. Clear out the trunk and only haul stuff when you really need it. For every one hundred pounds you can save two percent or seven cents a gallon.
Sorry honey, your brother can’t come with. It’d cost an extra thirty cents a gallon.