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BMW 3-Series (E90 E92) Forum
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N53 compression test
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| 06-10-2023, 10:56 PM | #1 |
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Enlisted Member
 
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Rep 38
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N53 compression test
I've just done a compression test on my 2007 N53. I thought I'd record the results here so that others know what to expect. I used this cheap amazon tester that appears well built esp. for £16:
https://www.amazon.co.uk/dp/B08C5J3GLP/ Results PSI (from cylinder 1 to 6): 225, 220, 225, 235, 225, 235 My method: - engine cold - remove the single fuse (in the glovebox fuse box) that controls the injectors and ignition spark (F39 on my car) - remove all spark plugs - screw the tester into each cylinder - crank 8 times HTH |
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