DukeDelago
Seaman Apprentice
- Joined
- Jul 17, 2009
- Messages
- 46
I just completed my top end rebuild for the powerhead on my 1990 maxum 2100 ldc with force 120 powerhead, replaced all 4 pistons and rings. Reassembled and reinstalled and she fired right up. Had a great day on the lake two sundays ago, engine fired up every time and no longer stalled when shifting out of gear which was a nice change! Last Friday I pulled the boat into my driveway and ran it on the muffs, once again started immediately and idled for a good 15-20 minutes with no issues. Shut it down and Saturday took it out to the lake again, and again started and idled perfectly. Got up and ran on a plane for a few minutes, then throttled down and sat at idle still with no problems. I then killed the engine and waited for my buddy to get his boat launched. Sat for 5 or ten minutes, and when I tried to start again the starter wouldn't engage. The nut on top had tightened up, I played with it for a bit, getting it to work for a crank or two but then would have the same problem. Once I fixed the starter problem, the engine wouldn't catch. I figured I had just flooded the carbs screwing around trying to get it started with a flakey starter (which is not even a year old, but that's another thread) so I let it sit for a couple of hours while we fished, figuring it would start later. Unfortunately I had the same issue when I went to start it later in the day. When I opened the engine compartment and looked at the motor as I tried to start it, I saw the top carb spitting fuel out of the vent on the side so I immediately stopped and had my buddy tow me in. I've since pulled off both carbs and tore them down and can find nothing wrong. floats are set right and seal off the inlet valve when closed, jets are clear and no obvious obstructions anywhere that I can see. I'm going to reinstall and try again after cleaning with spray carb cleaner, but are there any suggestions if it still leaks or wont start? (by the way I did a compression test after taking of the carbs just to make sure I hadn't blown the motor again and all cylinders were at 140 psi with a cold block so I don't think it has anything to do with the rebuild). Sorry for the length of this post but I wanted to provide as much info as possible! Thanks for any input you can give!