My daily driver, 94 Subaru Legacy 2.2L, suffered a loss of power late last year. I knew it was hitting on three cylinders but I thought the problem was a blown head gasket. Anyway, I drove it for another 10K miles because in the interim, I'd found an 84K mile motor (mine had 145K miles on it) and decided to just swap the darn thing out. The newer motor runs like a champ (did the swap in June) but I had the old motor laying around. Finally got around to getting rid of it two days ago, but I pulled the head to verify the original problem. Oooooooo! NOT a blown head gasket. Any ideas how this happened?

 

Greg

 

 

It had a pretty lean condition. Perhaps a bad fuel injector?