sp1tekiller Posted September 25, 2011 Report Share Posted September 25, 2011 Not really sure how to describe the problem, but I'll start with a bit of back-story. The bike is a 2002, top end was rebuilt along with new reeds and air filter. This rebuild took place last winter, the bike has sat since then due to a lot of life's little problems. I fired it up earlier this spring and found it to be a bear to start. Once running, it was giving off light backfires, almost like one of the cylinders would cut out for a second and then kick back in with a little "pop", the strength of the noise seemed to be louder depending on how long the cylinder cut out for. I didn't have time to do much about it then, so it sat again until today. Once again, it was tough to get it going, but eventually it started up and seemed to run well until it started its little routine again. I pulled the plugs, they seemed to be a little wet, maybe a little dark. Leads me to believe that it's probably a rich situation? I also noticed that it seems to be a little more problematic on the left cylinder, not sure if that means anything. Both plugs looked nearly identical. Is it likely just a simple jetting issue? I'm not good with carbs, lol. Quote Link to comment Share on other sites More sharing options...
Phelps Posted September 25, 2011 Report Share Posted September 25, 2011 do a compression check Quote Link to comment Share on other sites More sharing options...
sp1tekiller Posted September 25, 2011 Author Report Share Posted September 25, 2011 It almost looks similar to what this one is doing, however it will rev fine. http://bansheehq.com/forums/index.php?showtopic=147396 Quote Link to comment Share on other sites More sharing options...
sp1tekiller Posted September 26, 2011 Author Report Share Posted September 26, 2011 do a compression check Geez, I certainly hope it's nothing like that. That's the whole reason I had the top end rebuilt. Quote Link to comment Share on other sites More sharing options...
jlsparky7 Posted September 26, 2011 Report Share Posted September 26, 2011 Could be exhaust leaks, check for intake leaks as well. What mods are done? Quote Link to comment Share on other sites More sharing options...
sp1tekiller Posted September 26, 2011 Author Report Share Posted September 26, 2011 It's missing those joint clamps or whatever they're called that go where the silencers join onto the pipes, I know that much. What's the best way to check for leaks? Quote Link to comment Share on other sites More sharing options...
sp1tekiller Posted September 26, 2011 Author Report Share Posted September 26, 2011 It seems like the left pipe is not joined as tightly to the engine as the right one. Could something so simple cause this problem? Quote Link to comment Share on other sites More sharing options...
sp1tekiller Posted September 26, 2011 Author Report Share Posted September 26, 2011 (edited) Checked if the carbs were synced, it seems like the left one is a LITTLE slower, the right one goes up just a TINY bit quicker. How much of an impact could this make? Edited September 26, 2011 by sp1tekiller Quote Link to comment Share on other sites More sharing options...
sp1tekiller Posted September 26, 2011 Author Report Share Posted September 26, 2011 They seem to be pretty synced now, but the right side is just a tiny bit higher. They move simultaneously, though. Any thoughts anyone? Quote Link to comment Share on other sites More sharing options...
blast off Posted September 27, 2011 Report Share Posted September 27, 2011 It's missing those joint clamps or whatever they're called that go where the silencers join onto the pipes, I know that much. What's the best way to check for leaks? if you are talking about the rubber exhaust clamps that go from the head pipe to the stingers, then, yeah you need those. that would be you exhaust leak, rectify the exhaust leaks. also, put fresh gas in it and clean the carbs, its been sitting for a year. Quote Link to comment Share on other sites More sharing options...
volcrano Posted September 27, 2011 Report Share Posted September 27, 2011 They seem to be pretty synced now, but the right side is just a tiny bit higher. They move simultaneously, though. Any thoughts anyone? Yes get a carb sync tool.f.a.s.t sells them.they show vaccuum being pulled into carb and are numbered.u can sync to perfection.if ur that close tho,unless ur eyes are terrible it shouldnt be sputtering.sounds like jetting.what is ur jetting? Quote Link to comment Share on other sites More sharing options...
sp1tekiller Posted September 27, 2011 Author Report Share Posted September 27, 2011 I tried some carb cleaner and put fresh gas/plugs in, no luck. Going to have to take them all apart and clean them properly, I guess. Quote Link to comment Share on other sites More sharing options...
jlsparky7 Posted September 28, 2011 Report Share Posted September 28, 2011 Definitely the exhaust leaks causing the prob. The engine actually pulls in some of the exhaust, so it if pulls in fresh air itll make it run lean and backfire. Quote Link to comment Share on other sites More sharing options...
sp1tekiller Posted September 28, 2011 Author Report Share Posted September 28, 2011 It's only the one side though and the plugs don't seem to show a lean condition? Quote Link to comment Share on other sites More sharing options...
jlsparky7 Posted September 28, 2011 Report Share Posted September 28, 2011 It's only the one side though and the plugs don't seem to show a lean condition? Trust me, its the exhaust leaks.... Just delt with this problem... Tried everything else. Quote Link to comment Share on other sites More sharing options...
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