Fuel injector issues can become apparent with many different symptoms including problems with the car starting, idling problems, a failed emissions test, generally poor car performance and an inability to reach high revolutions per minute, or RPMs. Two major problems exist with the fuel injector. There are bad, faulty, clogged and leaking fuel injectors, which generally cause a decrease in performance, and a leaking fuel injector, which can cause fuel odors within the vehicle as well as poor performance.
Both leaking and damaged fuel injectors can cause serious engine issues and lead to engine failure. If there are external fuel injector leaks, the entire fuel injector body must be replaced. Fuel injectors are quite sturdy and rarely need to be replaced, so individuals who plan on buying a new one should first try cleaning the current injector.
Issues that can be caused by both leaking and clogged fuel injectors include:
Symptoms purely for clogged or faulty fuel injectors include:
Symptoms solely for leaking fuel injectors include:
Engine knock or detonation, hydro lock and oil thinning can all cause serious damage to vehicle engines and should be addressed immediately.Learn More
Fuel gauge problems are commonly the result of faulty electrical grounding at the tank or a problem with the sending unit inside the tank but can also be caused by faulty wiring or a bad fuse. Troubleshooting the problem involves a process of elimination that includes each of these as a possible root cause.Full Answer >
Symptoms of a dirty fuel filter include losing power while driving uphill, problems starting the car, stalling, grinding noises in the engine, the smell of gas fumes and an engine that misfires frequently. An engine that hesitates when the accelerator is depressed can also indicate a dirty fuel filter, especially when this occurs at slow speeds.Full Answer >
Low fuel pressure results in several issues for the engine, including rough idle, poor performance and decreased fuel economy. If the pressure is too low, the engine does not start. Fuel-injected engines are especially susceptible to problems with both fuel volume and fuel pressure.Full Answer >
Symptoms of a failing fuel pressure regulator include blackened spark plugs, a rough running engine and black smoke coming out of the tailpipe. This is because a failing regulator causes inconsistent fuel pressure to the engine, leading to a rich running condition and excessive fuel use.Full Answer >