1999 pontiac Firebird 3.8 V6, 150k miles, seemed like one of the cyliders wasnt firing when you tried to accelerate, initially no check engine light came on, tested and got #6 cylinder misfire, had some corrosion on the wires so changed wires and plugs, changed the coil (tried more than one to make sure coil i changed wasnt bad), fuel injectors were also changed and electronics for FI check ok, no vacuum leaks, changed computer, checked cylinder compression (is 160 psi) after each thing was tested/changed car was checked and still had #6 cylinder misfire, one thing I noticed is some corrosion where the coil hooks up so possibly not getting a good ground.

I thought after checking all this that it might be an internal problem, possibly the CAM, but was told that if it was the CAM then I would not have gotten good compression on that cylinder.

Anyone know what might be the issue?

Thanks in advance for any help/ideas.

CG

 

1999 pontiac Firebird 3.8 V6, 150k miles, seemed like one of the cyliders wasnt firing when you tried to accelerate, initially no check engine light came on, tested and got #6 cylinder misfire, had some corrosion on the wires so changed wires and plugs, changed the coil (tried more than one to make sure coil i changed wasnt bad), fuel injectors were also changed and electronics for FI check ok, no vacuum leaks, changed computer, checked cylinder compression (is 160 psi) after each thing was tested/changed car was checked and still had #6 cylinder misfire, one thing I noticed is some corrosion where the coil hooks up so possibly not getting a good ground.

I thought after checking all this that it might be an internal problem, possibly the CAM, but was told that if it was the CAM then I would not have gotten good compression on that cylinder.

Anyone know what might be the issue?

Thanks in advance for any help/ideas.

CG

 

you would probably have better luck on the firebird v6 forum. this is a thirdgen site, and not that many people here have that engine