tman
04-07-2007, 08:00 PM
I just got a 89R. This is my 3rd R. I did a leakdown test on the motor fine (held 6psi for over 20min). Also compression test @ 165lb. Reeds are fine. My problem is 1/4 throttle bad miss like it's breaking up bad.
Only mods are open airbox, ESR type6 pipe, & stock carb. I'm at sea level to 1000 ft.
The jetting when I got it was:
165 main
Stock needle 2nd cilp down
42 pilot
1-3/4 turns out air screw
I'm now at :
160 main
stock needle 1st clip down
45 pilot
1-1/4 turns out
Bike starts fine. Idles fine. Runs great at wide open. Floats seem fine also.
I just can't seem to get the 1/4 throttle set. If I adjust the needle down to the 5th clip slot it way worse!!! So, I know I'm rich.
What would cause a stock needle to become so RICH???
Anyways I order a CEL needle. Will this work in a stock carb- engine set-up?
Would electrical be at fault here? ( doesn't seem like it to me)
I know what the problem is 20 year old junk CARB!!!! I should just throw it away & get a new airstriker.
I may do a larger motor kit later. If I would buy a carb is a 38mm to much for a stock motor? I would hate to have to buy a new carb when doing a larger motor kit later.
Only mods are open airbox, ESR type6 pipe, & stock carb. I'm at sea level to 1000 ft.
The jetting when I got it was:
165 main
Stock needle 2nd cilp down
42 pilot
1-3/4 turns out air screw
I'm now at :
160 main
stock needle 1st clip down
45 pilot
1-1/4 turns out
Bike starts fine. Idles fine. Runs great at wide open. Floats seem fine also.
I just can't seem to get the 1/4 throttle set. If I adjust the needle down to the 5th clip slot it way worse!!! So, I know I'm rich.
What would cause a stock needle to become so RICH???
Anyways I order a CEL needle. Will this work in a stock carb- engine set-up?
Would electrical be at fault here? ( doesn't seem like it to me)
I know what the problem is 20 year old junk CARB!!!! I should just throw it away & get a new airstriker.
I may do a larger motor kit later. If I would buy a carb is a 38mm to much for a stock motor? I would hate to have to buy a new carb when doing a larger motor kit later.