The motor is a 1989 force 125 1251e9b. I took the boat to the marina and the tech The tech said that there was high leakdown in cylinder 3. 1-5lb, 2-5lb, 3-30lb, 4-10lb. I dont have the compression numbers at the moment. He also said he could see scoring on the #3 cylinder wall with a flashlilght.
After I picked up the boat I was driving it back to the cabin and noticed that at idle it was sputtering like the motor was missing. The rpms would increase and it would lurch forward then idle down. The idle was set high since at closed throttle through no wake zones I still had a small wake. I think it felt like a loose connection or something because the sputter was not consistent because it actually ran smooth at times.
When I got it back to the dock and put it in neutral the symptoms seem to dissapear. When I put it in gear the symptoms returned. I took it out on the water again and it was doing the same thing. Sometimes it would miss or act like it wanted to die at high speeds as well. I was crusing along and could tell something wasnt right so I slowed down and the engine seem to run smooth and less vibration so I left it at 3700rpm, then about 5 mins later again with the hickup but this time the wife noticed as well and told me to get to the dock. The motor has not died but I am nervous to take it out again for fear of the motor stalling and being dead in the water. This only appears to happen when I engage the motor. Sitting at the dock ideling in neutral I have not herd the sputtering.
The motor does not backfire when running (although sometimes it does hickup when I try to start it)
Would the leakdown in one cylinder cause these symptoms?
Any help or advice would be greatly appreciated.
Marc
After I picked up the boat I was driving it back to the cabin and noticed that at idle it was sputtering like the motor was missing. The rpms would increase and it would lurch forward then idle down. The idle was set high since at closed throttle through no wake zones I still had a small wake. I think it felt like a loose connection or something because the sputter was not consistent because it actually ran smooth at times.
When I got it back to the dock and put it in neutral the symptoms seem to dissapear. When I put it in gear the symptoms returned. I took it out on the water again and it was doing the same thing. Sometimes it would miss or act like it wanted to die at high speeds as well. I was crusing along and could tell something wasnt right so I slowed down and the engine seem to run smooth and less vibration so I left it at 3700rpm, then about 5 mins later again with the hickup but this time the wife noticed as well and told me to get to the dock. The motor has not died but I am nervous to take it out again for fear of the motor stalling and being dead in the water. This only appears to happen when I engage the motor. Sitting at the dock ideling in neutral I have not herd the sputtering.
The motor does not backfire when running (although sometimes it does hickup when I try to start it)
Would the leakdown in one cylinder cause these symptoms?
Any help or advice would be greatly appreciated.
Marc