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polizei polizei is offline
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Join Date: May 2007
Location: Collegeville, PA
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By hearing your responses, it sounds like bad cam timing can only explain *some* of the low compression. Is that right? Again, we're seeing an average of 80 PSI per cylinder, and the leak down numbers look OK.

In layman's terms, leak down tests determine how much air/fuel can escape from the combustion chamber. And compression tests determine how much pressure can be held in each chamber. Is that right?

So, it sounds like the results must be explained by some combination of these 3 points:

1. False negative on the Compression Test
2. False positive on the Leak Down Test
3. Bad Cam Timing

Am I missing anything else?
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Old 01-10-2012, 07:51 AM
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