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Well my 750E which has been running great suddenly decided to start stumbling at all rpms. I took it to a track day this weekend and really ran it good. Everything was fine and then all of a suddent she started to stumble. It felt loke it was running fat. I got it home and pulled the plugs and all looked good. A little fat on the bottom end but it has always been that way. I put new plugs in it and it was the same. Next I raised the idle to about 3000rpm and pulled one at a time each spark plug lead to see if I could pin point the problem down to one cylinder. Each time I pulled a lead the bike ran worse which leads me to believe it is not an ignition problem. The only things I can think is carburation or timing. I am going to pull the carbs and see what is up but like I said the plugs look fine. I have no air leaks and the filter is brand new. is there a chance it might have jumped a tooth on the cam chain? The motor fires right up and sounds healthy. No funny noises other that the stumble. I need to get it fixed by this weekend as I have a ride planned with some buddies. any advice would be welcome
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Petcock.............1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
1985 GS1150ES stock with 85 Red E bodywork.
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Did it sart running fat during a run or on the way home?
Kinda sounds like the rubber plugs covering the jets in the float bowl might have slipped out of place.
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mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
#1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
#2 son: 1980 GS1000G
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during a run on the track.
I switched the petcock to prime and the same issue was still present.Comment
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I would be all over the carbs, something has probably plugged one of the passages, that or your Ignitor is not firing the coils properlyComment
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well I solved the problem. I believe the carb vent line was clogged and this was causing the problem. I pulled the carbs and all was well with them. I reinstalled everything and all is fine now. Thank god!!!Comment
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WooHoo!!!!!!!!!!Originally posted by doug g View Post1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
1985 GS1150ES stock with 85 Red E bodywork.
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