crazy settings needle/air screw/ slide screw

versuspop · Post by **versuspop** » Thu May 07, 2009 9:51 am

I have a 65 CA77.
Bike was running rich/ high idle, but after running bike it would want to idle so low that it would die...and fouling plugs...

running much more smoothe now, lower , but consistent idle, good acceleration.

after many attempts i have come to these settings:
Needle is in top notch (sitting lowest in jet)
Slide screw is alomst all the wat out
air screw is all the way to bottom less about 1/8th turn
float height 26.5~27mm

other info:
NOS carb. 35 slow jet. can't find nunmber on main jet. have nos paper airfilter attached. carb nuts not overtightened. valve clearance to spec.

Still Idles a bit high (no tach, however on ca77)....checking tonight to see if plugs fouled....
this whole set up just seems wrong.

Any thoughts?

LOUD MOUSE · Post by **LOUD MOUSE** » Thu May 07, 2009 11:16 am

You for sure have something out of sorts with the way you have the carb adjusted. ............lm

versuspop wrote:I have a 65 CA77.
Bike was running rich/ high idle, but after running bike it would want to idle so low that it would die...and fouling plugs...

running much more smoothe now, lower , but consistent idle, good acceleration.

after many attempts i have come to these settings:
Needle is in top notch (sitting lowest in jet)
Slide screw is alomst all the wat out
air screw is all the way to bottom less about 1/8th turn
float height 26.5~27mm

other info:
NOS carb. 35 slow jet. can't find nunmber on main jet. have nos paper airfilter attached. carb nuts not overtightened. valve clearance to spec.

Still Idles a bit high (no tach, however on ca77)....checking tonight to see if plugs fouled....
this whole set up just seems wrong.

Any thoughts?

DONZIE · Post by **DONZIE** » Tue May 12, 2009 9:12 pm

Do you have the required slack in the throttle cable

versuspop · Post by **versuspop** » Wed May 13, 2009 6:11 am

cable is actually a bit too long.
went from stock to superbike bars.

versuspop · Post by **versuspop** » Wed May 13, 2009 6:15 am

still fouling plugs with previous set up sooooo....

i have switched to a 115 main jet and the original needle.

now it will not start. back fires on ignition. (assumed to be lean now. verify, anyone?)

i switched to the 115 main jet because that was what was in the original carb.

i also have a 130 for a keyster kit.

joeweir1 · Post by **joeweir1** » Thu May 14, 2009 12:20 am

did you try the 130 with the original needle?

versuspop · Post by **versuspop** » Thu May 14, 2009 5:48 am

no, not yet...recollecting my thoughts after taking the carb off for the millionth time.

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crazy settings needle/air screw/ slide screw

crazy settings needle/air screw/ slide screw

Re: crazy settings needle/air screw/ slide screw