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Old 05-22-2002, 01:13 PM
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Compression test results for a 500E

As part of a PPI on a 92 500E w/ 96,000 miles, the compression test results were: 180 on all cylinders, except 5 and 7, which were 170 (test done hot). Any feedback - is this acceptable? I need to know pretty quickly, so that I can say yes or no.

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Old 05-22-2002, 02:15 PM
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Join Date: Feb 2000
Location: Canada
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As long as they are all within 10% of each other, you should be OK.
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Old 05-22-2002, 02:48 PM
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Location: St. Albert, Alberta, Canada
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That's great. I think someone, a long time ago, talked about 180 being pretty much new spec. All within that tight range is super.

Obviously no compression issues with this engine. Did you have a leak-down test down also? Just curious.
John Shellenberg
1998 C230 "Black Betty" 240K

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