byronjacobson
Seaman Apprentice
- Joined
- Jul 28, 2009
- Messages
- 44
Hi,
I recently acquired a jw-10 3 hp johnson 1952-54 outboard. I've worked on these before, but this one has really frustrated me. I usually clean the carb and put in fresh gas and quite often they start and run just fine.
I did the same with this one and it started and ran for about a minute and then died from flooding. Gas was coming out of the front of the carb so I ordered a new float needle and seat. After installing the new needle and seat I still had the same problem. I then examined the cork float and put some marine varnish on it. That was a mistake as the varnish quickly deteriated. I then bought some seal all and coated the cork float twice. Recleaned the carb and still have the same problem, gas leaking out of the carb.
I then took another 3 hp johnson I had that runs fine and took the float cork out of that one and tried using it and again the same problem.
I can get the motor to start and if I keep the high and low speed needles turned out less than one turn it will run for about 5 minutes before flooding. I even tried turning the gas valve on the tank so barely open to see if that would help. It actually did a little, but I know that's not the way to fix the motor.
I put new packings around both the high and low speed needles and even looked at the reed valves.
I would have ordered a new float but wasn't able to find a part number since these motors were made way back 1952-54.
I'm debating trying to make a float out of balsom wood or something. I've had the carb on and off at least 5 times and have tried to be careful when cleaning including removing the high and low speed needles, the idle nozzle, and float seat.
I'm suspious of the float not having enough lift to keep the needle valve closed, but then again maybe it is something else I'm missing.
If i turn the carb upside down i can not blow thru the gas intake and when the carb is right side up I can blow so it seems the needle valve is opening and closing at least based on me trying to blow air thru the gas intake.
spark and compression is fine, I just can't get it stop flooding. I've spent 3 days on this and am really frustrated. To top it off, tonight I broke the spring on the recoil so now I have to fix that also.
Sure would appreciate some suggestions on getting the carb to stop flooding. My email is jake331@charter.net
Maybe someone out there would like to buy this little motor. It is complete with lower cowling, pumps water fine and starts easily when not flooded.
I recently acquired a jw-10 3 hp johnson 1952-54 outboard. I've worked on these before, but this one has really frustrated me. I usually clean the carb and put in fresh gas and quite often they start and run just fine.
I did the same with this one and it started and ran for about a minute and then died from flooding. Gas was coming out of the front of the carb so I ordered a new float needle and seat. After installing the new needle and seat I still had the same problem. I then examined the cork float and put some marine varnish on it. That was a mistake as the varnish quickly deteriated. I then bought some seal all and coated the cork float twice. Recleaned the carb and still have the same problem, gas leaking out of the carb.
I then took another 3 hp johnson I had that runs fine and took the float cork out of that one and tried using it and again the same problem.
I can get the motor to start and if I keep the high and low speed needles turned out less than one turn it will run for about 5 minutes before flooding. I even tried turning the gas valve on the tank so barely open to see if that would help. It actually did a little, but I know that's not the way to fix the motor.
I put new packings around both the high and low speed needles and even looked at the reed valves.
I would have ordered a new float but wasn't able to find a part number since these motors were made way back 1952-54.
I'm debating trying to make a float out of balsom wood or something. I've had the carb on and off at least 5 times and have tried to be careful when cleaning including removing the high and low speed needles, the idle nozzle, and float seat.
I'm suspious of the float not having enough lift to keep the needle valve closed, but then again maybe it is something else I'm missing.
If i turn the carb upside down i can not blow thru the gas intake and when the carb is right side up I can blow so it seems the needle valve is opening and closing at least based on me trying to blow air thru the gas intake.
spark and compression is fine, I just can't get it stop flooding. I've spent 3 days on this and am really frustrated. To top it off, tonight I broke the spring on the recoil so now I have to fix that also.
Sure would appreciate some suggestions on getting the carb to stop flooding. My email is jake331@charter.net
Maybe someone out there would like to buy this little motor. It is complete with lower cowling, pumps water fine and starts easily when not flooded.
