APD
Stainless
- Joined
- Nov 5, 2005
- Location
- Hudson Valley, NY
I have been unsuccessful at finding a good chainsaw discussion forum so I thought Id post it here. If you know of a good chainsaw forum let me know.
I have a craftsman (poulan) 18" 40cc saw that Im trying to fix. After starting, it runs for a few seconds and dies. If you give it fuel while its running, it dies even quicker. It will do this about 3 times, and then it locks up. Hydrolocking with fuel. This I know because the starter gets hard to pull, and if you push in the primer bulb, it will not re-inflate unless you let it sit for an hour or so. Also, the carb and fuel system gets pressurized and I if I loosen the screw on top of the carb, fuel shoots out and the primer bulb will re-inflate. If I let it sit for a few hours the pressure will bleed off and I can start it again, but only for a few seconds as I described.
If I take everything apart and put it back together again, the pressure is released, and I can start it again and then it will do the same thing.
I have checked everything I can think of, even replaced the gaskets and diaphragms in the carb. Right after I replaced the diaphragms, it ran best, and I actually thought I fixed it...it ran for several minutes, but then it went right back to the hydrolocking symptoms. I have made sure the gas tank is venting properly, everything appears clean and tight, starts on the first pull.
Any ideas what would cause this hydrolocking condition?
I have a craftsman (poulan) 18" 40cc saw that Im trying to fix. After starting, it runs for a few seconds and dies. If you give it fuel while its running, it dies even quicker. It will do this about 3 times, and then it locks up. Hydrolocking with fuel. This I know because the starter gets hard to pull, and if you push in the primer bulb, it will not re-inflate unless you let it sit for an hour or so. Also, the carb and fuel system gets pressurized and I if I loosen the screw on top of the carb, fuel shoots out and the primer bulb will re-inflate. If I let it sit for a few hours the pressure will bleed off and I can start it again, but only for a few seconds as I described.
If I take everything apart and put it back together again, the pressure is released, and I can start it again and then it will do the same thing.
I have checked everything I can think of, even replaced the gaskets and diaphragms in the carb. Right after I replaced the diaphragms, it ran best, and I actually thought I fixed it...it ran for several minutes, but then it went right back to the hydrolocking symptoms. I have made sure the gas tank is venting properly, everything appears clean and tight, starts on the first pull.
Any ideas what would cause this hydrolocking condition?