cylinder pressure check - Chevy and GMC Duramax Diesel Forum
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Old 03-17-2010, 08:04 AM   eBay Motors  #1 (permalink)
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cylinder pressure check

how do i go about testing each cylinder for pressure loss if a cup might have pulled? so i know which one needs to be changed
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Old 03-17-2010, 08:53 AM   eBay Motors  #2 (permalink)
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You need to get a compression tester that is made for a diesel. You then remove the glow plug from each cylinder and insert the tester in there. IIRC they should be around 400.
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