Thread: Compression PSI
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Old 04-06-2013, 08:41 PM   #10
James Rogers
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Join Date: May 2010
Location: Asheville,NC
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Default Re: Compression PSI

Quote:
Originally Posted by roccaas View Post
Pulled 4 plugs. Turned 4 full turns (amazing to reach across an engine and push on a metal rod that fires the starter.

1st turn = 60 psi.
6th or more = 60 psi.

Throttle was closed, coil disconnected, gas gauge shut down, Tilly bowl dry.

This all came about from a Samba guy (VW Bus) who had 3 of 4 exhaust valves that looked like the back end of a Wookie the night after some Romulan Ale, so he suggested a vac test.

I really don't want to pay for a leakdown test, and the car runs fine - so I dont' want to mess TOO much with it, and 60 psi sounds good, but "The Book Of Les" does not give a figure.

Is there a better way to do this to get better answers?

I really don't want to pull the valves/cover, etc. cause then the problems will mount and I'll wish I'd just left a well running car ALONE!!
Always check compression with the throttle wide open.
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