1994 Force 70HP Low Compression

[Headponder]

Hello Everyone,<br /><br />I just purchased a used boat with a 1994 Force 70HP. The motor is like new but compression readings are low-81,78,76. It's never been decarboned. Will a good cleanout with some Seafoam/powertune bring these values up or do I have major issues? The engine starts and idles fine. Any advice would be appreciated.

 

[JB]

Re: 1994 Force 70HP Low Compression

Howdy, Headponder.<br /><br />Welcome to iboats. <br /><br />When the cylinders all measure that close it usually is a result of the guage and technique, not an engine problem.<br /><br />You can do no harm by decarbing it and retesting.<br /><br />Good luck.

 

[roscoe]

Re: 1994 Force 70HP Low Compression

Decarb away.<br />Then recheck with all 3 plugs out, kill switch to "stop", and throttle set to wide open.<br /><br />Post results.<br /><br />Good Luck.