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Main Area => Odds n Ends => Topic started by: Jay_wolf on September 24, 2009, 10:41:06 AM

Title: 125cc running wierd
Post by: Jay_wolf on September 24, 2009, 10:41:06 AM
all of a sudden it hesitates and backfires past 4000 rpm , it just stutters and bogs , i pulled the carb ,. and it all looked fine from what i saw . any ideas?
Title: Re: 125cc running wierd
Post by: seamax on September 24, 2009, 11:08:35 AM
have you pulled the plugs...I pulled mine recently after my bike stuarted stuttering and one of my plugs was rich. Adjusted the fule/aire mixture screw and put in new plugs.
Title: Re: 125cc running wierd
Post by: Jay_wolf on September 24, 2009, 01:58:56 PM
Yep, its a single , so just the one , its a lovely tan colour , my thought was a weak plug
Title: Re: 125cc running wierd
Post by: seamax on September 24, 2009, 02:19:12 PM
have you put a voltmeter to the coil?
Title: Re: 125cc running wierd
Post by: yamahonkawazuki on September 24, 2009, 09:21:51 PM
Quote from: Jay_wolf on September 24, 2009, 10:41:06 AM
all of a sudden it hesitates and backfires past 4000 rpm , it just stutters and bogs , i pulled the carb ,. and it all looked fine from what i saw . any ideas?
Hey jay does this bike use breaker point ignition? or check whatever would trigger the coil to fire. and see if itcould be at fault  :thumb: