ive been reading this thread for a bit and wonder if i have the same
problem. after leaving my 89 2.1 digifant vanagon sitting for a few days i
heard a knocking sound on startup. right away i shut it down and took a
compression test. 135 all the way around. one thing though, the # 4 spark
plug was very loose and showed sooty blowby all over the exterior of itself.
the knock is more resonant than a tap, louder than a tick. and during the
compression test (turning the engine over 5 times) it wasn't detectable at
all.
are we still talking about the same thing? lifters, valve seats etc...?
could the results i got still point to a more serious problem.
any insight will be appreciated.
gregory

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