nastylowcadillac Posted February 9, 2004 Report Share Posted February 9, 2004 the bike runs great at some times then poorly and back again, it seems to run great in some parts of the field then cuts out at high RPM/ high speed in others(very odd...)when i take it out on the road it pulls like crazy untill i hit 4th or 5th and it starts to build up, then cuts out and runs shitty. anyone have any ideas or past experiences?(BTW tors is unplugged and i run BP 93 with 104+ oil is @ 32:1) Quote Link to comment Share on other sites More sharing options...
BenBB Posted February 9, 2004 Report Share Posted February 9, 2004 Sounds electrical, a high-speed miss is a symptom of a failing coil, I'd start there if you're sure there's no apparent pattern (like only when hot/cold). Might be a reed but chances are it wouldn't be intermittant like that...not certain but there's an outside chance that the fuel additive is separating out and making the jetting funky... Quote Link to comment Share on other sites More sharing options...
Trouble T Posted February 10, 2004 Report Share Posted February 10, 2004 The same thing happened to me and it turned out to be a small piece of grass in the main jet. It ran fine until I went past half throttle in 5th or 6th. Quote Link to comment Share on other sites More sharing options...
Banchetta Posted February 10, 2004 Report Share Posted February 10, 2004 Sounds like your lean on the jetting....Running out of fuel at wot...Do a plug test at wot and pull the plugs...What are your mods and jetting?? Quote Link to comment Share on other sites More sharing options...
nastylowcadillac Posted February 23, 2004 Author Report Share Posted February 23, 2004 Ben- i dont think its electrical, it has a new stator and shows good spark T- i think this could be a a possibility,except i had the carbs cleaned out and synched(supposedly) by the shop(clinton county yamaha) Banchetta- the bike was jetted for winter riding(cant remeber jet #'s though...) the plugs dont look bad but the left side is oil fouling them to be honest i'm a total newby to working on my bikes (first couple were 4-strokes...sorry guys ). i am really disappointed with the fact that i took my bike to the shop and it sounded and ran ok (it was shitty out and i couldnt get cranked up in 4th untill it dried up a little)but still did the same damn thing it did before i took it there.PLUS... i told em while the carbs were off to replace the tops with the TORS removal kit, not only did they not do that but also plugged the TORS back up. AND i said take that worthless boost bottle off and replace that intake(the bottle one obviosly has the 2 holes...), once again didnt do it. and to top it all off the bike STILL RUNS SHITTY!!! oh sure you cant really hear the difference or feel it at low(under 45-50mph) but when the bike is in a good mood it freakin screams and there is a HUGE difference in the way it sounds and runs under a direct comparison(such as it suddenly runs great as i shift into 4th gear and it pulls the front wheels to the sky for about 5 seconds then bogs back down to its normal groggy state).sorry for the long post i had to vent... Quote Link to comment Share on other sites More sharing options...
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