Thread: Blowing oil smoke and gas on passenger side above header. Please help disgnose.

Post the exact codes it spit out on the scanner. There are a lot of different misfire codes.

Try soaking the O2 sensor with PB Blaster or some other good penetrating oil where it meets the manifold. A torch also comes in handy on this as you can heat the manifold bung around the O2 and while it's warm try backing it out. May have to loosen/tighten a few times to get it to move. I've used a pipe wrench to back out a stubborn sensor that rounded off.

You have to get that sensor installed or it's never going to run right.

Originally Posted by FordMan77

Post the exact codes it spit out on the scanner. There are a lot of different misfire codes.

Try soaking the O2 sensor with PB Blaster or some other good penetrating oil where it meets the manifold. A torch also comes in handy on this as you can heat the manifold bung around the O2 and while it's warm try backing it out. May have to loosen/tighten a few times to get it to move. I've used a pipe wrench to back out a stubborn sensor that rounded off.

You have to get that sensor installed or it's never going to run right.

I tried pretty much all of that and it's not coming out. The nut is stripped now so it's not going to be possible even if I take off the header again. What I need is to just hook up an o2 sensor simulator or dummy that actually works, to the wiring harness, if anyone has any recommendations. I should have a few bucks to buy or construct one tomorrow. Thanks.
BTW P0301 cylinder misfire and I think P480 was the O2 sensor.