backfire
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backfire
hey everyone i took the baffles out of my v and hines exhaust and my bike was fine when riding.now the temperature dropped a little and its backfiring when i crack the throttle and its running like crap.the last time this happened the carb came off the manifold but i checked it and it was fine.could it be to cold?too much air?im in NJ and its 30 degrees. please help thanks
Road Master
Joined: Aug 2008
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From: STL
what do the plugs look like? when is the last time the bike ran? what changes have you made since the last time it ran correct? what other mods does it have besides the pipes? Does the problem go away if you put the baffles back in?
OK, I'll take a stab at this one.
Cold and humid air is more dense then dry warm air, so more will fit in the cylinder. This creates a lean condition combined with less than usual back pressure (removed baffles) and this is why you get your backfire. Put your baffles back in and that will help or you need to rejet your carb.
Cold and humid air is more dense then dry warm air, so more will fit in the cylinder. This creates a lean condition combined with less than usual back pressure (removed baffles) and this is why you get your backfire. Put your baffles back in and that will help or you need to rejet your carb.
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