Category Archives: Fuel System
Weight is the enemy of fuel economy. Everyone from here to Plantersville knows this makes sense.
Some of us in the Plantersville area carry a bunch of unnecessary weight, and I’m not talkin’ what you see in the mirror.
All that extra weight wastes gas as you drive between here and Plantersville, and everywhere else.
Lose the junk and save some money.
…And you really only need one of those spare tires.
Let’s talk about alternative fuel vehicles. In their quest to reduce the use of fossil fuels and harmful exhaust emissions in our Tupelo environment, automakers will have a number of alternatives for Tupelo auto owners very soon.
For instance, Flex Fuel vehicles are already available in the Tupelo area. Flex Fuel vehicles can run on gasoline or on E85 fuel. E85 is a mixture of 85 percent ethanol and 15 percent gasoline. The ethanol is made from corn. The benefits to Tupelo drivers are in using less petroleum and reduced pollution. The drawbacks are that E85 gets lower fuel economy and that when gas prices are low, E85 can be more expensive than straight gasoline.
Tupelo car owners should only use E85 if they have a Flex Fuel compatible engine. Flex Fuel vehicles have special seals and gaskets that can stand up to the high alcohol content of E85. Using E85 in a regular engine can lead to gas leaks and fires.
Diesel engines have been around the Tupelo area for a long, long time. Modern diesels are very refined and fuel efficient. Diesel fuel can be made from renewable sources like vegetable oil, too. Diesel fuel from algae and sunlight is reported to be pretty close to being commercially viable.
There are also a number of natural gas vehicles on our Tupelo roads. Gasoline engines are adapted to run on compressed natural gas. It’s less expensive than gasoline and burns very cleanly. You can even refill it with a special pump from your gas line at home.
Natural gas engines don’t make as much power and don’t get as good gas mileage, but they cost Tupelo auto owners less per mile to run. The big inconvenience is that the tank that holds the compressed natural gas takes up a lot of room; even your whole trunk! And there may not be places to refuel on a road trip from Tupelo to Tupelo.
Plug-in electric vehicles are now available in our Tupelo area. Battery technology is the limiting factor right now. Electric cars have a limited range and are really best for use close to home. As battery technology advances, electric cars will perform closer and closer to conventional power plants.
That brings us to hybrids. There are a bunch of hybrids on our MS roads, with more to come. Hybrid technology combines internal combustion engines with electric motors.
A mild hybrid has a regular gas or diesel engine that’s assisted by the electric motor. The electric motor can propel the vehicle by itself up to a certain speed under gentle acceleration. There are mild hybrids in full-sized pickups and SUVs. They deliver MPG similar to their highway ratings.
A full hybrid will rely primarily on the electric motor for power. It’ll have a small gas or diesel engine that generates electricity for the batteries.
Another breakthrough technology from automakers is hydrogen fuel cells. Fuel cell vehicles use hydrogen to generate electricity. Several global car makers have prototypes on the road. The appeal is that the only thing that comes out of the tail pipe is water vapor. It’ll take some time to build a national infrastructure of hydrogen fueling stations before there’s widespread use in MS.
A quick word from Tupelo NAPA AutoCare Centers about safety around hybrid and electric vehicles. Unlike the battery in your current family car, these carry enough voltage to kill you. Never mess around under the hood or with the batteries or electrical wiring. Your Tupelo service technician at Tupelo NAPA AutoCare Centers is trained to safely disable the flow of electricity before performing maintenance or repairs on the vehicle.
Hybrids are really not do-it-yourself vehicles unless you’re specifically trained on hybrid systems.
Tupelo car owners know that engines burn fuel to operate. Fuel is pumped from your fuel tank to your 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 engine.
Direct injection engines burn fuel more efficiently than conventional 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 fuel efficiency. The turbocharged version delivers 350 horsepower.
Why the big difference in power? Direct injection systems allow fuel to be squirted into the 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 and improved fuel economy.
Fuel injectors are precision instruments. They have to deliver the right amount of fuel at exactly the time the 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 for Tupelo auto owners as well as delivering less power to the engine.
Fuel injectors are not cheap to replace. Direct injection fuel injectors are even more expensive. 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 for Tupelo drivers. 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 at Tupelo NAPA AutoCare Centers in Tupelo. 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, your fuel injectors will last for a long time.
With high fuel prices in Tupelo MS 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 Tupelo MS 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 Tupelo MS service advisor at Tupelo NAPA AutoCare Centers.
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 Tupelo!
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 Tupelo NAPA AutoCare Centers, give us a call at 662.842.0036 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 economy 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 MS fuel companies also deliver a more consistent quality of fuel than do bargain stations in the Tupelo 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 Tupelo NAPA AutoCare Centers in Tupelo 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 Tupelo NAPA AutoCare Centers in Tupelo 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.
Is your car sometimes hard to start on an early Tupelo morning? When you turn the key, does it hesitate or stutter? If so, the problem could be the result of a dirty fuel system. Your car’s fuel system starts with the air filter and ends in the top of your engine. Over time, different parts of the system get dirty, which robs you of performance and hurts your fuel economy.
Most Tupelo auto owners have fuel injectors, rather than a carburetor. Fuel injection systems have fewer problems and require less adjustment. But they still need to be properly maintained. This is why your owner’s manual has a schedule for cleaning your fuel injectors and other vital parts of your fuel system.
Some Tupelo car owners are interested in buying fuel system cleaners that they can pour into your gas tank. You can do that – and there are lots of great products available that can help maintain an already clean fuel system – but these products cannot do a major cleaning. For that, you need to see Tupelo NAPA AutoCare Centers. Tupelo NAPA AutoCare Centers has the professional tools and chemicals to really do a complete service.
Tupelo NAPA AutoCare Centers uses a process that gives your car a deep, professional fuel system cleaning. You need to remove particles, gum and varnish from your fuel system and get those injectors running cleanly and efficiently. After a professional fuel system cleaning, you’ll notice more power, better MPG and reduced exhaust emissions.
The cleaners also help prevent rust and corrosion in your fuel system and lubricate critical engine parts.
Fuel system cleaning is just one of those essential recommended service items that helps keep your pickup running strong. As with all maintenance, it can help avoid costly repairs that often result from not taking the right preventive steps. Tupelo drivers will notice the difference in how well their car runs. Check with your knowledgeable Tupelo NAPA AutoCare Centers service professional to see when your car is scheduled for a fuel system cleaning.
An ounce of prevention really is worth a pound of cure for Tupelo car owners.
The function of the fuel filter is pretty self-explanatory. It filters your fuel. The fuel filter is in the fuel line somewhere in between the fuel tank and the engine. Both gas and diesel vehicles around Tupelo MS use fuel filters.
For more information about your fuel filter, visit Tupelo NAPA AutoCare Centers or come by our shop located at Find yout local NAPA AutoCare of Tupelo in Tupelo, MS 38801.
Please call 662.842.0036 to make an appointment.
Generally speaking there’s not a lot of dirt in our Tupelo MS auto fuel supply, but there is enough that you want to screen it out. The problem actually gets worse the older your vehicle becomes. That’s because dirt, rust and other contaminants will settle out of the fuel and onto the bottom of the fuel tank. After your pickup is five years or older, it can actually have a fair amount of sediment built up.
That just means that the fuel filter has to work harder as your pickup ages. It’ll get clogged sooner and need to be replaced more often.
A symptom of a clogged fuel filter is that the engine sputters at highway speeds or under hard acceleration. That’s because enough fuel is getting through around town, but when you need more fuel for speed, enough just can’t get through the filter. Obviously, that could be dangerous if your car or truck can’t get enough power to get you out of harm’s way.
For just that reason, fuel filters have a bypass valve. When the filter is severely clogged, some fuel can bypass the filter all together. Of course that means that dirty, unfiltered fuel is getting through to be burned in the engine.
This dirt can then clog and damage your fuel injectors. Now injectors are not cheap to replace, so you don’t want to cause them damage just because you didn’t spend a few bucks to replace a fuel filter.
You know, in a way, the fuel filter can be the poster child for preventive maintenance. It’s a little part, it’s simple and it’s cheap to take care of. But if it’s neglected, it could lead to thousands of dollars of repair bills.
Those auto service schedules in your owner’s manual are there for a reason. If ever you don’t understand a recommended service, just ask your Tupelo service advisor at Tupelo NAPA AutoCare Centers. We’ll be happy to explain.
In very simple terms, a fuel injector is a valve that squirts fuel into your pickup 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 this happens thousands of times a minute in every single fuel-injected car driving down Tupelo, Mooreville, and Plantersville interstates.
Most fuel injectors for gas engines are known in the Tupelo 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.
A few car makers have recently introduced gas direct injection systemson some engines. They are now available at some Tupelo 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 fuel economy for gas-poor Belden, Mooreville, and Tupelo drivers. MS motorists can expect to see more of it in the future.
High temperatures under your pickup hood and variations in Tupelo 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.
When injectors are dirty, the fuel doesn’t burn as efficiently resulting in poor fuel economy and loss of power. So it’s essential for Tupelo drivers keep their fuel injectors clean.
Your service specialist ar Tupelo NAPA AutoCare Centers 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 pickup fuel system means that you will spend less on gas, enjoy strong performance and prevent costly Tupelo repair bills down the road.
Having trouble with your fuel system? Bring your pickup into Tupelo NAPA AutoCare Centers for a check up.
Find yout local NAPA AutoCare of Tupelo
Tupelo, MS 38801
In today’s Tupelo NAPA AutoCare Centers auto post, we’re talking about fuel system cleaning. The first thing to know is how key it is to have a clean fuel system. Tupelo 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 fuel economy.
A clean fuel system saves money for Tupelo motorists at MS gas stations. We guess you could say, it all starts and ends at the pump. One of the most important things Tupelo car owners can do to keep their pickup 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 MS can actually be more costly for Tupelo auto owners in the long run. Now, most cars on MS expressways 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 pickup 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 dangerous. So Tupelo motorists should have their fuel filter changed when recommended. Check your owner’s manual or ask your knowledgeable Tupelo NAPA AutoCare Centers service specialist 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 Tupelo NAPA AutoCare Centers in Tupelo 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 key for Tupelo car owners 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 economy.
It is important for the fuel system proper, but there are a couple other things that will help keep your pickup 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 Tupelo NAPA AutoCare Centers to make sure that system is working properly for Tupelo auto owners and the breather filter needs to be replaced if it’s dirty as well.
Do all these things and your pickup engine’s air and fuel will be as clean as possible. You’ll get much better gas mileage and better power.
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 pickup engine.
Tupelo motorists 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 your pickup 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 pickup 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 owner’s manual to find out how often it should be serviced and how long you can expect it to last. Tupelo auto owners should change it before it becomes clogged. Your knowledgeable Tupelo NAPA AutoCare Centers technician can help you with recommended fuel filter replacement schedules.
If your fuel filter becomes clogged, your pickup engine will sputter when you drive at highway speeds or when you accelerate rapidly. A clogged filter allows enough fuel to run the car at low speeds around town in Tupelo, 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.
Tupelo auto owners take note: 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.
Fuel filters are the epitome of preventive maintenance. They are cheap and easy to change, but neglecting them can lead to costly repair bills for Tupelo motorists. Some fuel filters are inside the fuel tank and cannot be routinely serviced – your knowledgeable Tupelo NAPA AutoCare Centers service specialist will be able to tell you if this applies to your vehicle.
Good car care means following recommended schedules for preventive maintenance, including changing your fuel filters. Take the auto advice offered in every owner’s manual and have your vehicle regularly inspected at Tupelo NAPA AutoCare Centers. It may save Tupelo car owners money by preventing costly repairs, but it will also repay them in improved fuel economy, safety and peace of mind.