Compression Test values

[backfire101]

I have a 2005 Volvo Penta OSI-

I have a 2005 Volvo Penta OSI-E with 130 hours on it. Had a compression test done due to backfire problems and the results came back 168-180. Is this a good/acceptable range for an engine with so few hours. Thanks.

 

[el_pescador]

Sounds pretty healthy to me.

Sounds pretty healthy to me.

 

[robj]

"I think the guidline is all c

"I think the guidline is all cylinders should be within 10%, which yours are. Based on the numbers, your engine is fine.

Have a great day,

Rob."

 

[backfire101]

Does it matter what the values

Does it matter what the values are (i.e. 200 vs 180) or just that the values are within 10%?

 

[el_pescador]

"Seloc is as permissive as acc

"Seloc is as permissive as accepting the lowest as 75% of the highest. I see no problem whatsoever with the compression values you posted, except that they actually look a bit on the high side."