Back to all

Fuel Injectors

July 15, 2020



The last new American vehicles sold in Troy with a carburetor rolled out of the Michigan dealerships in 1990. Since then, all new vehicles here in Troy, 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 Troy 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 Michigan drivers can expect to see more of it in the future.

As Troy 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 Troy 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 Auto Pro Troy in Troy 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 Troy gas pump and your fuel injectors. A fuel system service at Auto Pro Troy 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 Auto Pro Troy 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.

Auto Pro Troy
512 East Maple Rd.
Troy, Michigan 48083
248-270-3002

Need Service?

Request a Quote

More articles from Auto Pro Troy Auto Repair

Losing Your Cool (Why is My Air Conditioning System Not Working?)

January 26, 2025

When you turn on the air conditioning in your vehicle, you expect cool air to come out of the vents. You depend on it, especially in hot weather, but it can also be important in humid weather when you need it to help defrost your windows and windshield. The air conditioning system has a lot of p... More

Taking the Heat (Batteries in Hot Weather)

January 19, 2025

Quick question. Which is tougher on a vehicle's battery, the heat or the cold? Believe it or not, it's the heat. Think about it. The battery often sits in the engine compartment next to that motor generating lots of heat. That can accelerate corrosion in the battery and may even cause water i... More

Breathe New Life into Your Engine (MAF sensor replacement)

January 12, 2025

If youve noticed your vehicle is hard to start, stalling, or has lost power, the culprit may be a part with an odd name: the MAF sensor. You may have never even heard of a MAF sensor, but its important that it be working correctly, or you may be experiencing some fairly significant engine issues... More