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post #18 of (permalink) Old 02-18-2015, 04:31 PM
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Join Date: Jan 2005
Location: San Juan Capistrano
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Originally Posted by Del View Post
Don't forget to dribble a little oil into each cylinder when doing the compression check. If you don't do this, you can end up with low readings.
Whoa, whoa - You're right, dribbling in a little oil will raise the readings if worn rings are the culprit. So yes, that's a diagnostic: if compression is low without oil, comes up with oil, blame the rings.

However, that doesn't mean:

1) you should always dribble in some oil before measuring compression.

2) if the readings are high with oil, then everything is fine.

Jay Mackro
San Juan Capistrano, CA

'65 Guilia Sprint GT
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