Thread: Mercury 200 HP Compression
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Unread 05-02-2020, 04:15 PM
Duke01 Duke01 is offline
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Join Date: Oct 2017
Location: Canton, MI
Posts: 82
Default Mercury 200 HP Compression
Launched my V20 cuddy today on Lake Erie which gave me a chance to check compression on my 1980 Mercury 200 HP. She is hard to start, but runs well. 1570 hours. Compression is as follows: 130, 135, 120, 125, 125, 115. I tested hot. My understand is that the overall range should be within 10%. I am close to 15%. Any thoughts regarding these numbers?

Thanks, Duke
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