any tips on adjusting carb

[626lowtoy]

whats up guys i did a full exhaust, changed out the jets main and secondary and needle, and run with a open air box, but my issue is if i gas it hard at the beginning it hesitates then grabs is it a adjustment issue or are my jets of.?

[sleddog66]

probably jetting and/or the A.P. Please list your current specs so we can help more.

[predatorred]

i have the same problem but i dont have jets..
if i push hard the gas lever while on neutral gear
the quad chokes and sometims turn off ..

is it also carb ajustmens..?

[sleddog66]

How do you not have jets?? Did you change over to EFI??

List current carb specs, and maybe we can give ideas.

[OutlawBill]

In stock form stock the Ideal circuit is very lean need to be richer and the AP shot needs to be shorten up

[evil 525]

i have the same problem too. when i give it gas i get a shutter or a hesitation when i adjust the fuel screw to go leaner the hesitation goes away but i get a backfire. its drove me crazy for years now:ermm: would love to tune it out.

[OutlawBill]

Originally posted by evil 525
i have the same problem too. when i give it gas i get a shutter or a hesitation when i adjust the fuel screw to go leaner the hesitation goes away but i get a backfire. its drove me crazy for years now:ermm: would love to tune it out.

fuel screw should be 2 to 2.5 turn out form full in with smoth ideal,

[evil 525]

Ya. I get that. but when your getting backfireing on your de-accel richening the fuel screw tunes it out. (which I'm sure you already know). But when I tune out the backfire I get the hesitation.

[OutlawBill]

Originally posted by evil 525
Ya. I get that. but when your getting backfireing on your de-accel richening the fuel screw tunes it out. (which I'm sure you already know). But when I tune out the backfire I get the hesitation. backfire could all be a air leak in one of the exhaust joints

[evil 525]

yup went through and sealed the exhaust too. i mean really sealed. took the headers off the header flange and sealed everything then checked everything with a flame on a lighter to see for any leaks

[OutlawBill]

check out this page http://www.factorypro.com/tech/carbkei.html

[evil 525]

man thats a lot of reading. ok so that helps a little. would have liked to see more about the ap adjustment. what will happen if you have your ap set too long or too short???.

[OutlawBill]

stock too long

[OutlawBill]

more reading http://www.thumperfaq.com/jetting.htm