How do you do a compression test?

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How do you do a compression test?

09-26-2009, 02:54 PM

kmaysob

Registered User

Join Date: Nov 2003

Location: mesa az

Posts: 1,681

Quote:

Originally Posted by Graplr

Here is a compression tester for $25-
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93644&xcamp=google&utm_source=googlebase&utm_medium=cpc&zmam=33951326&zmas=12&zmac=112&zmap=93644

Most people check it at the glow plugs vs. doing it at the injectors. I believe most do it with the engine warm.

You simply, one cylinder/glow plug at a time, replace the gp with the tool.

i could be wrong, but shouldnt it be done on a cold engine? thats how ive always done gas engines. just like adjusting valves

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