Mikeythrash

Had a blown head gasket got that replace got the engine cut ,new spark plugs,cap,rotor,ignition coil ,oil change and filter,new radiator,new hoses,new sensors,and the 2 cylinders that were misfiring the fuel injectors for those were replaced,fuel rail was cleaned and intake.after all that same two cylinders #2 and #4 still misfire... Anyone ? Have any suggestions??

Mikeythrash

Head cut I ment*

95Cherokee

Start by checking the fuel pressure at the rail with a gauge.

95Cherokee

How old are your plug wires? Wouldn't hurt to get a new set, faulty wire can cause misfire.

holycaveman

Did you have your head tested and shaved? Head gaskets just don't "blow"

compression check?

Mikeythrash

Actually yes new champion plugs and new wires.but I did some research and the new wires on there are Bosch platinum wires and I read that can cause misfires ?

Mikeythrash

Yea that was all done before all this head gasket was cut and tested all came out good everything has basically be replaced.

Mikeythrash

And there was a fuel pressure test and injector test done but not compression.

Mikeythrash

I ment head gasket was replaced all new bolts and head was cut. About 1/1000 of an Inch

Mikeythrash

Switched the plugs around to test and see if that would change misfire and it still did the same thing but they are bosh so maybe change them to something different ?

Platime

Last time i had a misfire this happened....

Mikeythrash

and what exactly is that ??? I'm not familiar with a lot of the mechanic side.

Platime

That would be a hole in the top of my piston. You need to do a compression test