Starving for fuel
Hi guys, first post. Just want to say you all have helped me A LOT in working on my bike. Hoping someone can help me here, the dealership didnt help much. I have a 94' 750 and i shaved the ears, removed the stock pipes and put straight pipes on it. I rejetted the carbs and shimmed the needles. Right now it has 40's for the pilots (which i think may be too small because i have the mixture screws out as far as i can take them, almost 7 turns and i still get popping on deceleration) the mains are 142's and urrently have the needles shimmed up with 3 shims (seems excessive to me). Oh, and i do have coasters on it as well in case that comes up.
Here is the problem i'm having. At idle its fine, starts fine, even when cold. I dont even have to choke it. At wide open throttle it has plenty of power no hesitation at all. But at cruising speed (im guessing the needles take over here) it bucks and carries on like its starving for fuel (this is at 3500 to 4000 rpms, somewhere in there, it acts worse on windy days which makes me think its running lean. If i choke it, it instantly straightens up, of cousre indont want to have to run it that way. Origonally i had 2 shims under the needles and took it to the dealership and explained what it was doing to try to get some advice and he said it sonded like the needles were'nt shimmed out enough, so... I put another shim in, no change whatsoever, so does anyone have advice for me, i feel like i'm wading through mud here!
Last edited by Mattejacob; 07-01-2011 at 11:13 PM.