The engine is fouling plugs too. I have put about 8 thousand miles on it and 2 sets of plugs. The bad cylinder reads 80 psi. I think I did the oil trick, and did not get an increase in compresssion. It has a unique history: ex usaf, then to a school "bus barn" as their "snow command" vehicle (in the antelope valley desert) The usaf left a "shark fin" aircraft antenna and a commo antenna base on the roof, and the school district added another one. Somewhere along the way, it got a 50 gallon gas tank installed. It had the "exempt" license when the school district sold it to me, so I must be the first private owner. The 12 mpg is what has me thinking "repower".
