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| only with the choke on https://vintagedirtbikeforums.alp-sys.com/viewtopic.php?f=21&t=4412 |
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| Author: | mbilder [ Mon Jan 12, 2015 9:16 pm ] |
| Post subject: | only with the choke on |
I picked up a new smoker. Its a 250 and has been sitting for 15 years. The former owner said it was running when he stopped riding it. I pulled out the air cleaner and it looked like it had just been oiled and even had clean grease on the bottom. I checked the oil and it was full and clear. The tank had some rust particles. I tried to clean it out (there was some accumulation in and on the petcock). I put some gas in and it started after 5 kicks. It only runs with the choke on and will die after a minute or so. It isn't a pulling a steady stream of fuel in as seen through the hose and fuel filter. I pulled the carb and am about to go through and clean it. What should I be looking for that might cause it to only run when the choke is on? |
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| Author: | rayivers [ Tue Jan 13, 2015 5:53 am ] |
| Post subject: | Re: only with the choke on |
The pilot jet and/or pilot system passages may be plugged, and the float level may be low as well. Ray |
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| Author: | mbilder [ Sun Feb 01, 2015 11:44 pm ] |
| Post subject: | Re: only with the choke on |
I think it was related to the air screw and Pilot. I took it apart and found goo on the air screw, so I cleaned it out again and it ran ok. It wasn't sucking fuel into the carb very well, so I took it apart again. I completely dismantled it including the choke. Blew it, pipe filtered and adjusted the float. Now it works great. |
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| Author: | mbilder [ Sun Feb 01, 2015 11:44 pm ] |
| Post subject: | Re: only with the choke on |
I think it was related to the air screw and Pilot. I took it apart and found goo on the air screw, so I cleaned it out again and it ran ok. It wasn't sucking fuel into the carb very well, so I took it apart again. I completely dismantled it including the choke. Blew it, pipe filtered and adjusted the float. Now it works great. |
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