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Message: <blockquote data-quote="kilohertz" data-source="post: 51608" data-attributes="member: 6974">So I ran it around again today, got stuck in the snow for a half hour, then went for a drive down the road. Seemed to be quite good. Only started to slow down on one of the little hills. I went back up to the house and checked the compression again, and it hasn't changed, still 25 PSI at cranking and 60 PSI when running on 3 cylinders. So now I think I will be ordering an engine gasket set and pull off at least the valve covers again and make sure the tappets are adjusted correctly, and if need be, pull off the head and see whats going on. Lap the valves and set the tappets. I have run about 1 liter of ATF/MMO and about 1 cup of water through the intake in the last few days, and it is definately better, but I want all 4 cylinders to be 90 psi at cranking speed. The vacuum gauge still flutters a little at high speed, considerably more at idle. Who knows, maybe the tappets are out of adjustment and the valves aren't closing all the way.I'll keep you posted.Paul</blockquote>