need help runs like crap

[mason07shee]

ok here it goes i pulled the motor apart and checked the transmission so i split the cases and now that it is back together it wont pull right. it seems to start well and idle fine .... even rev perfectly with no load on the motor. when i take it for a ride it will take off fine but falls on its face and pops and sputters from 1/4 throttle untill allmost wide open where it starts to pull again but still pops and sputters a bit. what i cant understand is that it works not bad in first but each gear gets worse. I checked compression its 148 and 145 psi with 20cc domes at 1250ft, the timing is at +5, carbon tech reeds, tors eliminator kit, with 27.5 pilot toomey needles on 4th clip from the top and 290 mains. pipes are shearer inframes and the bike smokes more out of the left side pipe.

Is this problem an air leak some where? it sounds like its missing really bad allmost electrical or timing maybe? When i checked the plugs today they looked perfect

any help would be great. thanks

Edited October 17, 2009 by mason07shee

[mason07shee]

forgot to mention that it has pod filters.

[SAVAGE420]

Did you do a leak down test at all? IMO your pretty damn lean on your mains man. 290's and shearers and pods at 1250ft and cold out is LEAN. Throw some 330-340's or so in there and do a Proper plug chop NOT a random plug check.

 

http://www.dfn.com/benkaren/plugchop.html <<< follow that too a "T" dont miss or mess with a step.

 

Give you this just for the good info for your carbs. http://www.dfn.com/benkaren/jetfaq.html

 

Seems now that winters weather is coming around everyone is running there bikes lean as hell...

[mason07shee]

thanks savage but its been like this since june but i fucked my hand up bad and this is the first time i am able to work on it. i will pull it apart and try it again. i will let you know what happens.

[mason07shee]

thanks savage but its been like this since june but i fucked my hand up bad and this is the first time i am able to work on it. i will pull it apart and try it again. i will let you know what happens.

all right so i moved the need clip down to the fith slot from the top brought my main jets up to 320 "was the biggest i had" and it got a little better but still not right. the bike starts in three kicks but like mentioned before it smokes alot more from the left exhaust pipe what is causing this next thing to do is a leaktest but i need to go get the materials to build it and i sprayed carb cleaner around my carb boots and nothing? i think i am going to pull it apart and reseal the case and new gaskets and see what happends