Hey everyone. I have a 1997 Camaro V6 3.8 with a bad misfire. The code reads that the third cylinder is misfiring. I get no power from the car at all and the check engine light blinks, which I have read in other threads is common in a misfire. I have replaced plugs, wires, ignition coil that deals with the third cylinder, and even the post-cat O2 sensor. These were suggestions that were made to me by the shop when I took it in but it has not been any better. Could we be looking at a clogged injector?

 

I would also like to add the problem codes that came up which I should of done earlier.

P0303
P0147

 

Twice now, on the same car, I've had a specific cylinder misfire issue. The problem wasn't any of the things you tried either. So I pulled the injector, removed the o-rings, soaked and swished it around in a small pill container filled with carb cleaner, put it back in, and the engine ran like a champ. I had it in the cleaner for at least a good hour while doing other stuff, and would give it a shake now and then. Not saying that will take care of your problem, but it's been a cheap ($0) fix twice for me now. Btw, two tanks of gas with fuel injector cleaner did diddly for the problem.

 

Thank you! I will give that a try.

 

Your cat could be plugged. Same thing happened to my Grand AM when the cat got plugged.