1999 75HP Force
Cranks and runs like a dream. The engine does not even spin all of the way over before it starts. It really runs like a champ. But...
I've only had the boat since June and it came with a skip. It ended up living at the shop all summer but now has new plugs, rebuilt fuel pump, rebuilt carbs, new water pump and thermostat, new primer bulb and new powerhead gaskets.
The engine runs fine but after a while it will not start sometimes and I can NOT create the problem in the driveway.
The basic scenario is we go out fishing, run the motor for 15-30 minutes, shut it off and use the trolling motor for 15-60 minutes, then start the big motor back up to move to another fishing spot. Do this over 4-6 hours or until the engine decides it hates me and will not start.
The day I got it back from the shop I ran it for about 4 hours like this and had no problems. The following week I took the wife out and we rode for about an hour on the lake, stopped and started fishing. We hit 5 coves and then it would not start. Loaded everything up, drove 25 miles home and it started and ran like nothing was ever wrong.
It's getting fuel. You can smell it and eventually see it in the water if you crank long enough. It's acting like it is not firing at all when this happens.
This engine has 3 CDM Modules (1 per cylinder) and Quicksilver Commander 2000 controls.
I have wiggled everything I can find to wiggle. I have disassembled the controls and checked the kill switch and ignition with a meter and everything appears to be working fine.
It's almost like something is either getting jarred lose on the water and then jarred again on the ride home, or something is heating up and cooling off once it gets home.
I've let the motor run for 2 hours in the driveway on muff's and could not recreate the problem.
The engine does not skip, spit, sputter, hiccup, cough, leak, smoke or anything else while it is running. It just decides not to start for an undetermined period of time.
I'm at a loss here and need some direction.
Cranks and runs like a dream. The engine does not even spin all of the way over before it starts. It really runs like a champ. But...
I've only had the boat since June and it came with a skip. It ended up living at the shop all summer but now has new plugs, rebuilt fuel pump, rebuilt carbs, new water pump and thermostat, new primer bulb and new powerhead gaskets.
The engine runs fine but after a while it will not start sometimes and I can NOT create the problem in the driveway.
The basic scenario is we go out fishing, run the motor for 15-30 minutes, shut it off and use the trolling motor for 15-60 minutes, then start the big motor back up to move to another fishing spot. Do this over 4-6 hours or until the engine decides it hates me and will not start.
The day I got it back from the shop I ran it for about 4 hours like this and had no problems. The following week I took the wife out and we rode for about an hour on the lake, stopped and started fishing. We hit 5 coves and then it would not start. Loaded everything up, drove 25 miles home and it started and ran like nothing was ever wrong.
It's getting fuel. You can smell it and eventually see it in the water if you crank long enough. It's acting like it is not firing at all when this happens.
This engine has 3 CDM Modules (1 per cylinder) and Quicksilver Commander 2000 controls.
I have wiggled everything I can find to wiggle. I have disassembled the controls and checked the kill switch and ignition with a meter and everything appears to be working fine.
It's almost like something is either getting jarred lose on the water and then jarred again on the ride home, or something is heating up and cooling off once it gets home.
I've let the motor run for 2 hours in the driveway on muff's and could not recreate the problem.
The engine does not skip, spit, sputter, hiccup, cough, leak, smoke or anything else while it is running. It just decides not to start for an undetermined period of time.
I'm at a loss here and need some direction.
