85 johnson 40 hp compression

CU2NITE

Petty Officer 1st Class
Joined
Jul 9, 2003
Messages
226
I checked my compression and the top is 129 and the bottom is 142 is this a bad reading? She still seems to run pretty good.<br />Thank you<br />CU<br /><br />--------------------<br />RUNNING THE MOTOR WHILE LISTENING TO THE HORN WILL MAKE YOU MORN!!
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: 85 johnson 40 hp compression

That's fine, CU2NITE.<br /><br />The important number is the difference. . .13psi in your case. Anything less than 15% is good.
 

CU2NITE

Petty Officer 1st Class
Joined
Jul 9, 2003
Messages
226
Re: 85 johnson 40 hp compression

Thanks JB! I'll sleep easy now. Can't wait to get back on the water. Wow what a great web site!!<br />CU<br /><br />--------------------<br />RUNNING THE MOTOR WHILE LISTENING TO THE HORN WILL MAKE YOU MORN!!
 
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