AUTONET TV

Fuel System Cleaning at McLearen Shell for Better Performance

Hi Herndon residents. 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.

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.  It also 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 Herndon residents.

So it's to Herndon residents' 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 Herndon vehicles than do bargain Herndon 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.

Herndon residents 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, your filter will need to be changed more often.

You can also purchase cleaners at McLearen Shell 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 McLearen Shell in Herndon that will result in better fuel economy and improved vehicle performance.

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

McLearen Shell
3043 Centreville Road
Herndon, VA 20171
(703) 318-7744
www.mclearenshell.com

Give me a Brake (Light)!

If that little brake warning light pops up on your dash, do you know what it means? Well, if you said no, you wouldn't be alone. You know it has something to do with your brakes, but exactly what? You're not sure. One of the reasons is that it could mean a lot of different things.

It could be something simple, like you put your parking brake on and forgot to take it off. Easy fix, you're on the road in seconds.

Or, it could mean there's something wrong with your anti-lock brake system. That is a pretty complex symphony of speed sensors, computers and wiring, and sometimes things get a little out of whack. You could have a defective sensor or some wiring may have gotten damaged or come loose. A trained technician at McLearen Shell with special equipment can sort it all out.

It's also possible you have low brake fluid. That could be caused by a number of things. One simple reason is that your brake pads have worn down. Replacing them could solve the problem. Another possibility is that you have a leak in your brake system. That could be serious. If your brake fluid level gets really low, your stopping power goes down along with it, and a vehicle that can't stop is a safety hazard to you and others on the road.

Of all the warning lights on your instrument panel, pay attention to the brake warning light. If it comes on, come on over to McLearen Shell very, very soon. A vehicle is great when it's moving. But if it can't stop, well, that is a disaster waiting to happen.

We’d love to hear from you. Let us know if you have any questions.

McLearen Shell
3043 Centreville Road
Herndon, VA 20171
(703) 318-7744
www.mclearenshell.com

Direct Fuel Injection Update from McLearen Shell

For those of you in Herndon, VA 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 fuel economy. 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 vehicle and can lead to damaged fuel injectors.

Replacing fuel injectors at McLearen Shell 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 McLearen Shell 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.

McLearen Shell
3043 Centreville Road
Herndon, VA 20171
(703) 318-7744
www.mclearenshell.com

Problems with Suspension Solved at McLearen Shell in Herndon

A vehicle's suspension system is tough. It can last for years and after lots of driving for Herndon drivers. But it can be damaged quickly by hitting a pothole, curb or rock, and it can wear more quickly if you frequently drive off-road or on bumpy roads. A workhorse vehicle — one that hauls heavy loads — is also going to be hard on its suspension system.

Because the useful life of your suspension system contains these elements of unpredictability, it is important for Herndon drivers to have them inspected periodically. Worn, broken and missing parts can be identified during an inspection at McLearen Shell . An ineffective suspension system will decrease the driver's control over a vehicle, so when it is damaged it frequently leads to the worst kind of vehicular damage — dangerous accidents.

The suspension system is composed of springs and shock absorbers (or shocks). Springs suspend the weight of the vehicle above its axles. They allow the vehicle to “bounce” over bumps, which reduces the force of the impact on the vehicle. Shocks reduce the rebound of the “bounce,” smoothing out the ride of the vehicle. They also force the tires to retain constant contact with the road. Shocks are responsible for “handling performance,” or the ease with which the driver controls the vehicle.

The springs in the suspension system are heavy-duty and rarely break or wear out. Shock absorbers are tough, too, but they will wear out.

Your vehicle might be equipped with struts. Struts are a combination spring and shock absorber. Struts, like shocks, have a limited life span.

Inspecting shocks or struts for damage and wear should be part of your preventive maintenance routine. Since a good suspension system is ultimately a safety feature of your vehicle, it's always better to be proactive about its care. In this case, good car care can prevent accidents.

There are some signs that will warn you that your suspension system may be in need of attention. One of the signs might be a cupped wear pattern on your tires. This is caused by the shocks bouncing unevenly. Other signs of bad shocks manifest themselves in the handling performance of your vehicle. You may notice a drifting sensation when cornering, often referred to as a “floaty” feeling. If the front of your vehicle dips significantly when you brake or if it rocks back and forth after stopping, it's time for new shocks. Your technician at McLearen Shell will check your shocks visually. If they're leaking, they need to be replaced.

Any one of these symptoms warrants an inspection of the suspension system. You should also get your suspension system inspected if you are involved in an accident involving one of your wheels. Herndon drivers should never put off suspension repairs. If you experience suspension system failure, it can cause a serious accident. If one of your shocks needs to be replaced, then replace all four of them. This allows for even handling of the vehicle. Replacing just one of the shocks is rarely good auto advice.

When you replace your shocks or struts, use parts that are equivalent to — or better than — the original shocks on the vehicle. The original equipment was for the weight and expected use of the vehicle, and Herndon drivers should never downgrade.

Upgrading, however, is another matter for Herndon drivers. If your suspension system gets a workout or you just want to improve your vehicle's handling performance, then you should upgrade to a better shock. If you haul heavy loads around Herndon or tow a trailer, then you should definitely be getting heavy-duty shocks.

 McLearen Shell
3043 Centreville Road
Herndon, VA 20171
(703) 318-7744
www.mclearenshell.com

Wiper Blades in VA

If you're gonna drive around the Herndon area, you've got to be able to see! So having a good set of windshield wipers is extremely important. We've all experienced the frustration and fear of not being able to see clearly during a storm or when our windshield is just dirty.

It seems like your wiper blades are always at their worst when you need them the most. But windshield wipers are like most other vehicle parts– they require regular attention in order to work their best.

You really ought to replace your wiper blades twice a year; in the spring and the fall. If it's going to be a particularly harsh winter in VA, you may even want to get special winter blades in the fall. Winter blades are designed to resist freezing.

Speaking of winter and freezing conditions, if your car has been sitting for a long time and the windshield becomes frozen, don't use your wipers to clear off snow and ice. That'll just tear up the blades and cause them to wear out more quickly. It may even damage the wiper motor.

Over time, wiper blades become hard and brittle, and then tear. They also lose their flexibility and just don't cover the windshield effectively.

Worn wiper blades aren't just a safety hazard; they can also scratch your windshield. That may require replacing the entire windshield, a big cost for such a little part.

Replace worn blades right away. Our professionals at McLearen Shell can provide you with a quality replacement blade. They cost about the same as they would at the store, but installation is included at McLearen Shell in Herndon.

Of course you also need windshield washer fluid to help your blades do their work. Even though McLearen Shell will top off the washer fluid with a full service oil change, it is a good idea to have some extra fluid at home, or in the car if you are on a long trip.

Always use windshield washer fluid. Plain water, even that fancy bottled water, may freeze in the fluid reservoir or on the windshield itself, making things worse. Besides, water won't do a good job of cleaning your windows.

And remember that some vehicles have two reservoirs: one for the windshield and one for the back window, which may be under the hood or somewhere in the back.

So follow these tips to keep your windshield clear and your eye on the road, and give us a call.

McLearen Shell
3043 Centreville Road
Herndon, VA 20171
(703) 318-7744
www.mclearenshell.com