violent shake when car is running

[michaelgrigoras]

it just started yesterday night i drove to my gfs house parked it later that night started it and it started shaking violently no idea why replaced bad fuel injector before this problem has occured also replaced head gasket no fluids leaking could it be a mass air flow sensor or more bad fuel injectors? any comments will help please and thank you

[krash]

MAF would put it in "limp" mode, meaning it won't go above 3k rpm or so. Guessing its another bad injector. I had to change 3 on mine, one after another, before the problem went away.

[michaelgrigoras]

is there an easy way i would be able to check if it was a faulty fuel injector?? ive heard taking one injector out will let you know if its bad while the car is running

[OutToWinPAHC]

Unplugging each injector one at a time. Unplug one if it stumbles, plug it back in and try the next. Same can be done for spark.

[Dattebayo]

Violent shaking means something (spark plug or injector) isn't firing on either cylinder #1 or #4.

[AZ89two4Tsx]

Are you sure your motor mounts aren't broken? lol

[alms24sebring]

sounds like a missfire. Better hope you did that head gasket right

[sandcrabsailor]

Are you sure the violent shaking of your car didn't have something to do with you and your girlfriend?

[94_240sx]

Injector... That's the first thing to check.

[michaelgrigoras]

checked out the fuel injectors turns out 2 are bad thanks for all the help its greatly appreciated!