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'86 Mercury 35HP 2-stroke compression
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<blockquote data-quote="MrGiggles" data-source="post: 508329" data-attributes="member: 22613"><p>Compression numbers can vary a lot between gauges, I don't put a lot of faith in the number alone. Last time I sold an outboard, I ran a compression test and came up with 210 psi across the board (four stroke). The buyer did it immediately after with his gauge and came up with 240 psi.</p><p></p><p>The length of the hose and what adapter you use for the gauge can even make a big difference on motors that have a smaller displacement.</p></blockquote><p></p>
[QUOTE="MrGiggles, post: 508329, member: 22613"] Compression numbers can vary a lot between gauges, I don't put a lot of faith in the number alone. Last time I sold an outboard, I ran a compression test and came up with 210 psi across the board (four stroke). The buyer did it immediately after with his gauge and came up with 240 psi. The length of the hose and what adapter you use for the gauge can even make a big difference on motors that have a smaller displacement. [/QUOTE]
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'86 Mercury 35HP 2-stroke compression
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