I recently rebuilt the carbs on my 1995 90 hp force outboard. I also did a decarb for the first time. I have only run this boat one time this summer and that was before the carb rebuild and decarb. It ran fine.
Before heading to the river, I started the motor a couple times on the muffs and I determined that I needed to choke it the first time I turned then key and it would start then die. After that it would start and run. This was without any increase in idle speed.
Today I got in the water, choked and turned the key and it fired right up and stalled. I turned the key again without choke and it fired and stalled, so I increased throttle and it stayed running and ran fine. I stopped a couple times and turned it off to verify that it would start up again. Turn off the motor, wait about thirty seconds, start right up as expected.
So I was feeling really good about the job I did on this motor and my wife even complimented me on how good it was running. After sitting with the motor off for about 10 minutes, I went to start it and it would fire, but not stay running. It acted as if the idle was set to low. This motor has been idling on muffs at very close to 800 RPM in neutral. I noticed the same in the water today up until that point. Anyway I had to choke it to get it to stay running. I ran it about 10 seconds at slow wake and came to a stop to see what my holeshot would be like. I punched it and it died. Keep in mind this was within a minute of having to choke it to start it and keep it running. I ran WOT for about 1 more minute to remove any excess gas that my be there from choking then I stopped again to check holeshot. It took off fine as expected with no hesitation.
Finally I stopped and anchored to let my son and the dog swim and I needed to raise the motor about 1/4 of the way up to prevent it from dragging on the bottom. I was concerned about losing gas out of the carbs because this happens sometimes. When it was time to go, I turned the key and it fired right up and died. It fired two more times and died then for about 15 more crank attempts I had absolutely no fire at all. I was ready to call for help then I decided to hold the choke and increase the throttle and it started. It ran real rough while I was waiting (forever it seemed) for my wife to get the anchor in. Once I got in gear it tried to die, but I kept it going and it ran fine all the way back to the ramp. I got the trailer in the water and it started right up but stalled a couple times while trying to get it on the trailer.
I'm thinking it is still running too rich and I think the idle might also need to be adjusted up a bit. FWIW I adjusted the carb floats twice to make sure they are horzontal with the carb body. I'd be inclined to move a little more lean on them, but I don't wan to risk any damage. All three idle mixture screws are one full turn out.
Please give me your thoughts on this. I'm sorry for the long post!
Before heading to the river, I started the motor a couple times on the muffs and I determined that I needed to choke it the first time I turned then key and it would start then die. After that it would start and run. This was without any increase in idle speed.
Today I got in the water, choked and turned the key and it fired right up and stalled. I turned the key again without choke and it fired and stalled, so I increased throttle and it stayed running and ran fine. I stopped a couple times and turned it off to verify that it would start up again. Turn off the motor, wait about thirty seconds, start right up as expected.
So I was feeling really good about the job I did on this motor and my wife even complimented me on how good it was running. After sitting with the motor off for about 10 minutes, I went to start it and it would fire, but not stay running. It acted as if the idle was set to low. This motor has been idling on muffs at very close to 800 RPM in neutral. I noticed the same in the water today up until that point. Anyway I had to choke it to get it to stay running. I ran it about 10 seconds at slow wake and came to a stop to see what my holeshot would be like. I punched it and it died. Keep in mind this was within a minute of having to choke it to start it and keep it running. I ran WOT for about 1 more minute to remove any excess gas that my be there from choking then I stopped again to check holeshot. It took off fine as expected with no hesitation.
Finally I stopped and anchored to let my son and the dog swim and I needed to raise the motor about 1/4 of the way up to prevent it from dragging on the bottom. I was concerned about losing gas out of the carbs because this happens sometimes. When it was time to go, I turned the key and it fired right up and died. It fired two more times and died then for about 15 more crank attempts I had absolutely no fire at all. I was ready to call for help then I decided to hold the choke and increase the throttle and it started. It ran real rough while I was waiting (forever it seemed) for my wife to get the anchor in. Once I got in gear it tried to die, but I kept it going and it ran fine all the way back to the ramp. I got the trailer in the water and it started right up but stalled a couple times while trying to get it on the trailer.
I'm thinking it is still running too rich and I think the idle might also need to be adjusted up a bit. FWIW I adjusted the carb floats twice to make sure they are horzontal with the carb body. I'd be inclined to move a little more lean on them, but I don't wan to risk any damage. All three idle mixture screws are one full turn out.
Please give me your thoughts on this. I'm sorry for the long post!
