My little brother has a 95 Disco 3.9 (OBDI) and called me because it was stalling when he would come to a stop, and he noticed a little smoking here and there. He took it to a general-purpose mechanic who read Code 48 on the code display and promptly told him his idle control valve was bad, but he didn't know if there were other problems since he didn't have the right computer to read the rest of the codes.
I asked my brother if it drove fine as long as he wasn't coming to a stop and he confirmed it did, so I said "bring it on by" thinking I'd quickly confirm the IACV diagnosis and swap it out and send him on his merry way.
No good deed goes unpunished.
He pulls up and smoke is pouring out from the underside of the engine bay. I pop the hood and EVERYTHING from the valve covers down is absolutely covered in oil. I look underneath and there is an insane amount of blow-by. Then I look at the ground and realize he's dripping oil all over the street in front of my house. There must be at least 20 separate drip spots from him sitting there for about 3 minutes.
I turn it on to move it to the backyard so it's not dripping in front of my house, and the whole engine is shaking violently. It feels incredibly down on power and is running so rough I'm afraid to drive it beyond the block. It looks like the VCGs have totally let go, but I feel like maybe they were overpressurized? Bad PVC? I can't even find a PCV. It wasn't overfilled with oil that I could tell. Anything else that could cause both VCGs to spontaneously fail majorly? Or anything else that could let oil leak all around the engine and make it look like a VCG?
I cleared the codes and 48 was the only one, but I think IACV is fine and just couldn't contend with whatever was causing it to run rough.
He's got to drive 50 miles from my house today and I don't want to send him off with it messed up. Any help you can give is greatly appreciated.
Edited by E36 Phantom, 01 November 2015 - 03:51 PM.