Posted by super99 on August 16, 2014 at 18:55:07 from (74.32.246.52):
My 400 has fouled the plugs every since I bought it. I put a set of non foulers on it and now it will run for a year or so on a set of plugs. I had to replace them again, so this time I ran a compression check on it. All 4 cylinders read 100 to 120#'s. Does that engine have valve seals that could be leaking oil into the cylinders? I figured the rings were wore out and that's why it fouled the plugs, but those readings should be good enough I think. Any ideas?? Thanks, Chris
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