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Jetting help help help


nicktoney

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i have trinity IV pipes, clamp on K&N in box with snorkle removed, boysen superstock reeds, annnd im at 1200-1400ft. 60-70* temps. right now i have 290mains in and when i pull the choke, when its hot, it doesnt spit and shit at all. it runs fine... and when its cold its a bitch to start.. what should my jetting be? richer?

 

this may have been said, didn't take the time to read thru the whole thread. what pilots do you have? the main will have nothing to do with the starting and idling. my very first thought is to go up on the pilot another size and see what happens. it should need the choke to cold start but not need it to warm start. if the motor's warm, it should start idling shitty when you pull the choke, if not try richening the pilot.

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well last night i had some free time... i tried cold starting it.. smelled fuel real bad. tore it down, carbs flooded out... i tore them completely apart, cleaned them completely, using speakerwire and such, put them back together with 290mains, 25pilots (same as before) and hooked it all up. backed the idle screws out all the way and turned them in about a turn each to have SOME idle to see whats up... pulled the choke control out. noticed it had a slight bend in it? put the choke piece from my old carbs in it (its straight) and tightened it all up... put the airbox back on... 8 kicks w choke on, it started? so i thought, well maybe it was all that carb cleaner or something letting it fire... i took it up the road, brought it home, set my idle where i wanted it... and put it back in the garage... came home around 1am, it was 55* roughly, went in, bike was cold... 4kicks and it fired right up... hmm... ill give it a try tonight too... but maybe it had to do with that bent choke piece or maybe they just needed idle adjustments and a thorough cleaning? oh, i noticed something... everyone knows the whole deal how the choke has 2 settings... half, and full out... well, mine wont hold out in full? why is that? like, it gets sucked back in and catches on half? thanks for everyones help btw...

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Sounds like you've more or less solved your problem. It would still probably start better yet with a larger pilot if you're still running the stock 25's. FYI, Pulling the choke out while WOT aka "the choke trick" never did squat in helping me determine anything.

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