Tag Archives: #autocarcare

Fuel Injectors

The last new American vehicles sold in Lawrenceville with a carburetor rolled out of the GA dealerships in 1990. Since then, all new vehicles here in Lawrenceville, 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 fuel economy and more power for Lawrenceville drivers. 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 GA drivers can expect to see more of it in the future.

As Lawrenceville residents can see, the level of precision required of fuel injectors is very high. It’s important that they operate properly in order for your vehicle to run right.

High temperatures under your hood and variations in Lawrenceville 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 fuel economy and loss of power. So it is important to keep your vehicle fuel injectors clean.

Skilled service technicians at Global Auto Solutions in Lawrenceville can perform a fuel system service for you. 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 Lawrenceville gas pump and your fuel injectors. A fuel system service at Global Auto Solutions 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 for you and deliver the right amount of fuel at the right time.

Our pros at Global Auto Solutions use a process for cleaning your vehicle 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 enjoy strong performance and prevent repairs down the road.

Global Auto Solutions
2710 Lawrenceville Highway
Lawrenceville, GA 30044
770.931.0222

Check Engine Light ? What’s That ?

Okay. You went to your local Lawrenceville car wash, and while your vehicle was under the dryer, the Check Engine light started flashing. Panic! What did you just do? Is something seriously wrong with the vehicle? Perhaps the Check Engine light stops flashing or it  just glows red. Hmm. Maybe things aren’t as bad as they seem. You decide to wait until payday to take your vehicle in to get serviced. In the meantime, the Check Engine light goes off  again. What? Maybe when it comes on it doesn’t mean anything, or maybe it’s just in your vehicle as some sort of scam to get you to pay for unnecessary repairs. Maybe or maybe not,however , don’t disregard a check engne light.

 
What possibly happened at the carwash….

Whoa! Let’s look at what really happened. Your vehicle was under an air dryer. Your air intake sensor measured too much air running through the engine. It sent its report to the engine computer, where a warning was triggered; there shouldn’t be that much airflow when the vehicle engine is idling. This is a serious problem that could cause permanent engine damage. Warning! The Check Engine light starts flashing, letting you know you need to take immediate action to prevent that damage.

You drive out from under the dryer, and the air intake sensor sends a new message to the computer. The computer realizes that everything is normal and tells the Check Engine light to stop flashing. The vehicle doesn’t need immediate attention; but there was a problem, and it should be checked out.After a few days the computer senses that the problem is gone, so it turns off the warning light.

Have questions abut your vehicle? Ask your Global Auto Solutions service advisor.

You may think this story illustrates the uselessness of a Check Engine light, but you should remember that a computer can’t think for itself; it can only follow its programming. It doesn’t know the difference between a car wash air dryer and a serious malfunction in your vehicle engine. That doesn’t make it useless. It just means you have to be the smart one.

Being smart doesn’t mean ignoring your vehicle Check Engine light. It lets you know when something is wrong, and you can prevent a lot of damage to your vehicle by paying proper attention to it.

Your engine computer is constantly collecting data about what is going on inside your vehicle engine. It knows what parameters are normal and when a reading may indicate a problem. It uses the Check Engine light to let you know when something isn’t right. It then stores a code in its memory — which a technician can retrieve — that indicates which reading was abnormal.

The technician uses this code as a starting place to find out what’s wrong with your vehicle. It’s like going to the doctor with a fever. The fever is the reading that is abnormal — your temperature is too high — but the doctor still has to figure out what’s causing it. It’s probably an infection, but what kind? Sinus infection? Appendicitis? Flu? The problems and their solutions are quite different. But a fever also tells a doctor what’s NOT wrong with you. Fevers don’t accompany stress headaches, ulcers or arthritis, so there’s no sense in testing for those conditions.

The pros at Global Auto Solutions respond to a trouble code in your vehicle’s computer in the same way. The code doesn’t say exactly what’s wrong, but it does give the technician a good indication of where to start looking —and where he/she doesn’t need to look.

Now, you wouldn’t consider diagnosing yourself with a serious medical problem — good medical advice unless you’re a doctor. So you shouldn’t consider trying to diagnose your vehicle’s troubles by yourself — good auto advice unless you’re a trained mechanic.

There are cheap scanners available on the market, and some Lawrenceville auto parts stores provide read trouble codes from your vehicle engine’s  computer for you. But these are really not good alternatives to taking your vehicle to a qualified service center such as Global Auto Solutions in Lawrenceville. Your engine’s computer has both short-term and long-term memory, and there are some codes that are specific to a particular make of vehicle. Cheap scanners can’t read an engine computer’s long-term memory nor can they interpret manufacturer-specific codes. That’s why our manager at Global Auto Solutions spends a lot of money on high-end diagnostic tools.

It’s as if you had a choice between a doctor who had a tongue depressor and a thermometer and one who had all the latest medical diagnostic equipment on hand. Honestly, which would you choose?

Getting your codes read at your Lawrenceville area auto parts store isn’t really a money-saver, either, unless you’re a trained mechanic. You’ll end up with a code that tells you a symptom. What usually happens next is that the Lawrenceville area parts store sells you something that directly relates to the symptom. It may or may not fix the problem. It’s actually cheaper to just go to Global Auto Solutions and get things fixed right the first time.

Remember, a fever can indicate a sinus infection or appendicitis. An antibiotic may be okay for that sinus infection, but it likely won’t help your appendicitis. Is it really wise to wait around to see if the antibiotic helps when you might have appendicitis?

Part of good vehicle care is knowing where you can get a problem fixed — and fixed right. Preventive maintenance goes a long way to keeping you out of the repair shop, but eventually, we will all have a problem that needs fixing. Let’s schedule an appointment or visit us at Global Auto Solutions in Lawrenceville, Ga , you’ll be glad you did.

Global Auto Solutions
2710 Lawrenceville Highway
Lawrenceville, GA 30044
770.931.0222