dan313
Active Member
I have an interesting issue. 350 MPI 230 Hours. Manifolds and Risers were changed 5 years ago. Three weeks ago my engine locked up. Turned out water in 4 cylinders on the starboard side. I Changed the manifolds, risers and flappers on Monday thinking that was the problem. They didn't look bad but I changed them anyway and Bay tested. Went for a 45 minute ride at various rpms and it ran great. Got back to the dock and checked to make sure there wasn't any oil in the water and all was good. Went down to the dock yesterday morning and went fishing. Ran for 35 minutes between 3900 and 4200 rpm and it ran great. Shut it off and about a half hour later I went to move the boat and it stumbled a little. Shut it off and when I went to restart it was hydrolocked. I threw out the anchor and waited for Sea Tow. When I did get back to the dock I pulled the plugs and found water in 4 cylinders on the starboard side. Oil was clean. So My question is. What can cause an intermittent issue with water getting in the cylinders? I spoke with a mechanic and he had no answer. Have any of you come across this issue and what was the fix?
Thanks,
Thanks,