Date:         Mon, 21 Jun 2004 22:27:41 -0700
Reply-To:     Gerald Masar <azsun99@EARTHLINK.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Gerald Masar <azsun99@EARTHLINK.NET>
Subject:      compression test
Content-Type: text/plain; charset="iso-8859-1"

Vanagoners,
This weekend, I did a compression check on my '90 Westy with 162K miles.
Usual procedure, remove all plugs, ground HT lead from coil, block throttle open,
remove FI relay and the item I am uncertain about, engine at operating temperature.
Bentley, p. 15.20, says oil temp. min. 30ºC (86ºF). Here in this part of Arizona (not
even PHX),
the temperature is well above that before noon and hotter in the garage where the van
was sitting.
Anyway, here are the results at ambient temp.: #1=130, #2=120, #3=120, #4=130.
Ran the test again the next day after a run up to Sedona and back, and waited for the
engine to cool down a little so I could get the plugs out and not burn myself.
Results: 125, 125, 125, 140 (in same order as above).
I understand a compression test is inconclusive without a leak-down test, and I am not
having any problems with the engine (other than normal for it's mileage), but would
anyone care to comment on these results, and how hot should the engine be for the
test?

Thanks,
Jerry