I have been observing a coolant loss for several
years.
small but on the increase.   I had removed the pushrod
tube cover to determine that it always leaked after
shutdown on short runs left head in the front.   Think
that perhaps I could just tighten the head a bit to
solve the problem I checked the compression before the
attempt.  left front 120, left rear 125 and the right
side about the same.   I remove the cover to the
headbolts and check the clearance on the valves.   Two
turns beyond flush.   Piece of cake.   Tighened all
but the two headbolts next to the injectors as those
bolts were so much work to get to.   New compression
is 0 left front 0 left rear so what happened?
Speculation please as I will be removing the left side
soon.   Also can you explain why the right side plugs
are burning rich in this condition.   It is the
science of the vanagons.
   God bless the lives of those who are no longer with
us because the tradegedy of the Columbia.  A God of
all believers and if you do not believe in god simply
our blessing.   gary

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