3126 oil loss

DagoBy

New Member
Sep 20, 2010
22
Osage Beach, MO
Boat Info
1996 450 Sundancer
Engines
3126 CAT
640 hours and no oil use on my 3126's. This season, my port engine has started using oil.......about a gallon in 132 hours. In an earlier post we all batted around the cause of the light blue smoke behind my boat...i guess it must be from the oil burning. After the boat sets for a week w/out running, it will smoke excessively at start up...it also seems to make one loud "knock" at start up. After use, it will smoke no more than the starboard motor (which is newly rebuilt 300 hours ago...broken valve) at start up...also no "knock" at start up. I still continue to have smoke as I operate the boat at all rpms. No noticeable power loss, no oil leaks, no visable oil in antifreeze....air filters seam to have a bit of oil in them, but no more than usual. What now??? Thanks for any help
 

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