View Full Version : Signs your Fuel injector is bad?

09-05-2004, 12:37 PM
since ive been trying to diagnose my car for its jerky motion and lost of power. i was thinking, could my fuel injectors be bad? it seems everytime i step on the gas it jerks continuously. i let off and it stops. so what are some signs of bad fuel injectors? when i vagd my car it said secondary air sensor. that was always on since installing my intake and has never given my issues. so what can it be

09-05-2004, 01:30 PM
Were there any misfire fault codes? A misfire will make the car jerk, especially with just 4 cylinders. About the fuel injectors, it wouldn't hurt to run some fuel injector cleaner through with a tank of the highest octane fuel you can find.

09-05-2004, 08:44 PM
Sounds like it's misfiring. Does your CEL ever flash? If so, thats a sure sign of misfire.

09-06-2004, 03:06 AM
A clogged injector should cause a rough idle. So a bad/dead one should cause a CEL to come up because one or more cylinders wont fire, which you can definetly hear and feel.

09-06-2004, 06:51 AM
missfires dont always make the CEL flash. i've had missfires with no blinking CEL