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Subject:Engine Rebuild week 4 - Valve knock question
From:Mark Mages
Date:Sun, 7 Apr 2002 13:47:23 -0700

Actually, this is week 5, but I was in AZ last week,
so it doesn't count :)

The engine starts, idles (ish), and I fixed the couple
leaks I had on startup (makes a huge difference using
the right t-stat gasket :))

But - the engine is knocking to beat the band.  I am
guessing it is valve knock - it is a high pitched ping
or pop, not a thud thud thud (piston related)... I got
under there with piece of hose up to my ear (no
stethoscopes around) and the sound is coming from the
2 outside pushrod tubes.  I can't tell if it is in the
valve cover or the cylinder head, but it is definitely
the 2 outside valves (1 & 4) on the drivers side.

The bentley says that it could be the hydraulic
lifters, but I checked them for tension before
reinstalling the head and they were quite firm.

So - what do I do now?  If nothing else, I am getting
it towed to the local shop and having them finish it
off for me tomorrow.  I need to get them to test the
exhaust gasses to make sure it is all groovy
anyways....

Thanks

=====
Mark
84 Rocco
87 Westfalia
96 Rockhopper Comp (commuter)
98 Yeti AS-R XC (freeride)
01 Schwinn Fastback Ltd (in progress)
http://student.fortlewis.edu/~mwmages

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