bmitchell82
Cadet
- Joined
- Apr 25, 2015
- Messages
- 9
1998 40 HP Mercury 2 cycle oil injected motor. SN: 0G650371
I can get the boat to start up fine, it will run at all RPMs under no load. Sound great.
Put the boat in gear, drive for about 3 - 5 minutes and then the motor dies.
I am able to start the boat back up under no load again, however as soon as I try putting it in gear and under load, the motor instantly dies again. This continues until the battery is dead. Only able to operate for the initial 3 - 5 minutes.
Had the boat towed back to my dock. Charged the battery up and a few days later went down, fired the boat up, let it run in idle for some time, seemed to be running good, took the boat back out on the water, same experience. could drive for about 3 - 5 minutes and would die off, and would not be able to drive it again.
My thought is that this is a fuel issue as I can start it up and run it after it dies, but then dies out again as soon as I put it under a load, but the fact that I am able to drive it for the first 3 - 5 minutes makes me question if that is a likely cause or not.
This is the same fuel that it had in it when I winterized it last year, I did add stabil to it.
My plan (was going to do today but has been raining all day) is to mix in some seafoam and top off with fresh gas. Currently has about a half tank of last years gas with stabil in it now. I also am going to change out the spark plugs.
Looking for other ideas as to what could cause this... is it a matter of the engine getting up to a certain temperature causing a component to then fail?
I was also going to replace the coil packs on it as there is a couple cracks in the boot of the wires however they don't appear to be that bad, but I found those to be about $90 each and there are 3 of them, so I would prefer to not replace them unless there is a high probability of them being the issue.
I can get the boat to start up fine, it will run at all RPMs under no load. Sound great.
Put the boat in gear, drive for about 3 - 5 minutes and then the motor dies.
I am able to start the boat back up under no load again, however as soon as I try putting it in gear and under load, the motor instantly dies again. This continues until the battery is dead. Only able to operate for the initial 3 - 5 minutes.
Had the boat towed back to my dock. Charged the battery up and a few days later went down, fired the boat up, let it run in idle for some time, seemed to be running good, took the boat back out on the water, same experience. could drive for about 3 - 5 minutes and would die off, and would not be able to drive it again.
My thought is that this is a fuel issue as I can start it up and run it after it dies, but then dies out again as soon as I put it under a load, but the fact that I am able to drive it for the first 3 - 5 minutes makes me question if that is a likely cause or not.
This is the same fuel that it had in it when I winterized it last year, I did add stabil to it.
My plan (was going to do today but has been raining all day) is to mix in some seafoam and top off with fresh gas. Currently has about a half tank of last years gas with stabil in it now. I also am going to change out the spark plugs.
Looking for other ideas as to what could cause this... is it a matter of the engine getting up to a certain temperature causing a component to then fail?
I was also going to replace the coil packs on it as there is a couple cracks in the boot of the wires however they don't appear to be that bad, but I found those to be about $90 each and there are 3 of them, so I would prefer to not replace them unless there is a high probability of them being the issue.
