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Whatbs Should Compression Be On 1980 25hp Johnson

M

Matt Thiele

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"G'day,
I've just got

"G'day,
I've just got a 1980 25hp Johnson which runs well but I want to check it out. I was wondering if anyone can tell me what compression readings I should hope to find on the cylinders if all is well?

Thanks,

Matt."
 
"Anything under 90lb in an eng

"Anything under 90lb in an engine of that age is worth looking into, starting with stuck rings."
 
"Thanks very much for the help

"Thanks very much for the help Ken.

I have 140 and 120 on the two cylinders, which I'm supposing isn't too bad for something that old!"
 
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