Compression Check...

zoomzoom1970

Cadet
Thread starter
Joined
Jun 8, 2010
Messages
7
Could someone tell me what the compression rating is on a 1999 100HP Yamaha 4 stroke?
 

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: Compression Check...

within 10 I of each other.
its a useless test mostly.
d0 a leak down test faster and far more accurate in determining a cylinders sealing ability.
 
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