Looking at buying a 94 Lumina Euro with a 3.4 DOHC, Car has 80,000 miles on it and is fouling rear bank plugs (is that right or left bank, damn sideways engines) and hard to start and a major blue cloud when it does. I have another engine lined up as I can install myself, just wondering if this one could be repaired. I was told the valve seals were "soft" in these engines. I am a v-8 Veteran and new to these 6's. Help would be appreciated.
Russ