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Author	Topic:   1996 Boston Whaler Rage OMC 115 Compression Specs
Bigchrisf4i	posted 08-25-2014 10:58 AM ET (US)         I recently checked compression (dry/cold motor) and had 90, 100, 90, 100. Is this compression ok? I know they should be within 10 percent of each other but I was expecting to see 115 across the board. Thoughts? Thanks in advance! 1996 15' Boston Whaler Rage OMC 115
Jeff	posted 08-25-2014 11:14 AM ET (US)             While even, those numbers would tell the motor is getting tired. There were no set specs, but most good 90/115 OMC V4's I have checked had compression in the 110-112 range.
Bigchrisf4i	posted 08-25-2014 11:23 AM ET (US)             Thanks Jeff, so motor maybe tired. Motor has not been checked hot and have not added any mystery oil to cylinders to see if numbers can be brought up. Currently have a spark issue on one cylinder. Thank you hopefully motor will run for a while before needed to be replaced.

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