- Sat Mar 19, 2022 5:43 pm
#100420
Hello,
Having some trouble with my bullet (2002 iron bullet 500 with about 35K miles.)
I have had it since new, and for a few years was a daily rider. It is fairly modified, Running a high compression piston with no gasket, ported head, samarat rockers with sintered steel blocks, kibblewhite valves, etc. It used to run with a concentric carburettor, but I replaced it with a monobloc last fall, due the the old concentric being really worn and knackered with a rough slide that was sticking badly. I've done all this work myself and it is(was) a great running bike.
The bike sat idle (pun) for several years while I dealt with some other issues in my life and wasn't able to give her the attention she deserved.
Fast forward to the current time. Like I mentioned, I've replaced the carburetor with a monobloc, as well as replaced the clutch plates, kick start pawl, added the reinforcement brace for the albion gearbox: although I don't suspect the latter 3 would have anything to do with my current head scratcher.
The bike starts was starting ok and seems to run and pull well, BUT has a habit of holding a high idle/rev when I come off throttle. I found that I could feather the clutch in gear to slow things down and then the Idle would remain low, but as soon as I rev, it stays high again. My initial thought was that the advance was sticking open (and to be fair, I hadn't touched the points, bad on me). When I went in, I did find that the mechanism was gummy so I cleaned it out, and fitted a new set of points while in there. At this point, the bike is starting and running extremely well, but I still seem to have the high rev issue. I've done a little adjusting with the points plate but have not had much luck. On a possibly related issue, i believe my pilot jet may be a little too large, as I have the adjuster almost as far out as it will go in order to get a good idle (when it's not over revving).
Any advice is very appreciated!
Thanks,
Pat
Having some trouble with my bullet (2002 iron bullet 500 with about 35K miles.)
I have had it since new, and for a few years was a daily rider. It is fairly modified, Running a high compression piston with no gasket, ported head, samarat rockers with sintered steel blocks, kibblewhite valves, etc. It used to run with a concentric carburettor, but I replaced it with a monobloc last fall, due the the old concentric being really worn and knackered with a rough slide that was sticking badly. I've done all this work myself and it is(was) a great running bike.
The bike sat idle (pun) for several years while I dealt with some other issues in my life and wasn't able to give her the attention she deserved.
Fast forward to the current time. Like I mentioned, I've replaced the carburetor with a monobloc, as well as replaced the clutch plates, kick start pawl, added the reinforcement brace for the albion gearbox: although I don't suspect the latter 3 would have anything to do with my current head scratcher.
The bike starts was starting ok and seems to run and pull well, BUT has a habit of holding a high idle/rev when I come off throttle. I found that I could feather the clutch in gear to slow things down and then the Idle would remain low, but as soon as I rev, it stays high again. My initial thought was that the advance was sticking open (and to be fair, I hadn't touched the points, bad on me). When I went in, I did find that the mechanism was gummy so I cleaned it out, and fitted a new set of points while in there. At this point, the bike is starting and running extremely well, but I still seem to have the high rev issue. I've done a little adjusting with the points plate but have not had much luck. On a possibly related issue, i believe my pilot jet may be a little too large, as I have the adjuster almost as far out as it will go in order to get a good idle (when it's not over revving).
Any advice is very appreciated!
Thanks,
Pat
