Car

[88-GT]

Car Misfiring

Hey guys,

Well today I went out and started the beast and once it was started I could hear the engine misfiring. The car ran fine a week ago but now it runs pretty ruff. Its only on the passenger side bank of the engine(I dont have an H or X) and only messes with the one side of the engine. It sounds off all the time. When it happens it sounds like a huge rush of air shoots out the exhaust. Ive ruled out plug wires as it ran fine before and they are new. Ive also changed o2 sensors. I just pulled the plugs and 1 2 3 are wet and gassy and 4 is carbony. Any help is appreciated. Thnx.

 

[89_Nach]

Have you checked to see if you have a header/manifold leak?

 

[88-GT]

Definately dont have a header leak, been checking that but as for the manifold( im assumming your talking about intake there isnt a noticable leak, althought I wouldnt know how to go about checking.

 

[88-GT]

bump

 

[zkillrr]

bump

I would not rule out plugs wires or cap, even though they are new a wire could be broken on the inside and you can't see it. on the side that you said
you was have problems start taking one wire off at a time then start it. if
nothing change car runs the same you will no that that is the bad wire if it gets worse that wire is working, to save money sometimes the simple things give you all the problems in the world an you will buy all the wrong things to fix it. I can also be wrong, but it can't hurt nothing because it's already
runing bad and this want cost anything but time!

 

[HISSIN50]

I would not rule out plugs wires or cap, even though they are new a wire could be broken on the inside and you can't see it. on the side that you said
you was have problems start taking one wire off at a time then start it. if
nothing change car runs the same you will no that that is the bad wire if it gets worse that wire is working...

this test was my first thought too. i would add that if you pull a plug wire and nothing changes (suggesting you have found a bad cylinder, for one reason or another), it can be several things. amongst them are the wire, plug injector or injector harness to that plug. if you find a bad cylinder and can rule out the ignition (wire, plug, etc), i would use a noid light or do a cylinder balance test (balance test checks the injectors).
go from there (post results if stumped). good luck.