Very very high idle with PWK carbs 33mm

[bansheenoob]

I'm asking myself if turning air screw clockwise on my carbs are supposed to make the engine idle lower or higher??! It seems for now that clockwise is making the idle higher??? Its like the engine is at 1/4 full throttle without touching the thumb!! Thing is I'm living in city and the noise its making is crazy!! So I cant test things for a long time and I dont want to damage beeing lean.

 

I'm looking for any tips guys!!Theres not too much on idle problems on google..

 

Could it be that the throttle cable is totally unadjusted? Air leaks even if everything is tight with the Boss intake? Jets really off?

 

setup:

stroker 385cc

cool heads

Vforce 3

starts very easy

carbs are cleaned

jets are pilot 50 and main 110

+4 timing

T5 exhaust

Boss intake

2 in 1 filter

brand new plugs

 

living in Quebec canada, not sure of elevation. Now hot/humid/warm out here but it can go cold anytime..

Edited May 17, 2012 by bansheenoob

[andrew3160]

Clockwise = higher idle

[shakar]

yup i agree take the filters off and take a peek to make sure the slides are all the way down. then sinc/ajust as needed.theres also the option of a snail lookin carb sinc tool. if thats not it .pos air leak so look into makin a leaky down test..or youll blower up. gooodluck

Edited May 17, 2012 by shakar

[bansheenoob]

Clockwise = higher idle

 

LOL thats why the idle was stupid high!!

 

 

do the slides go completely down when you are not giving it gas?

 

another thought is air leak

 

I'll have a look if the slides go completly down, but what is the normal air gap when throttle is at idle? is it completly shut?

 

yup i agree take the filters off and take a peek to make sure the slides are all the way down. then sinc/ajust as needed.theres also the option of a snail lookin carb sinc tool. if thats not it .pos air leak so look into makin a leaky down test..or youll blower up. gooodluck

 

How much it taes to damage an engine running a bit lean? I never went on a ride, just idled 2 mins max...I'll try to sync the carbs to..

 

thanks for all the good advice

[sheerider11]

Whenever you make an adjustment give the bike a few seconds to catch up. If you turn the idle down don't expect instant results. Gas it, let it come down. See where your at.

[bansheenoob]

Ok! Now the idle is fine, a bit low, but 10000x better!! The idle screw and the air/fuel are 3 turns out and the custom adjustable vent carb valve too.

 

BUT, I drove it around my house and let it idle for 10mins and stopped it. After, I started it again with 1 easy kick and let it idle for 1min, then 1/4 throttle and the Banshee made a deep tone, like it was too rich and just drown in fuel.

 

Now it just wont start LOL!!

 

I guess its tune time....

Edited May 17, 2012 by bansheenoob

[bansheenoob]

Damn!! it just WONT START!!!!!!!!!!!!!!!!!!!!!!!!!!!!!?%**%?&*?&* LOL

 

I will put it back to ultra high idle and work my way while its running...

[bansheenoob]

ok last bump for the night..

 

My main jet is 110, wich seems stupid small for the setup!!

 

Is it me or it should be around 158!!??

 

pilot is 50...needle I dont know

[vulvafan537240]

clockwise on the air screw makes it richer. if youre at 3 turns out, you need a bigger pilot jet. where was the air screw before? i think you should go back to where it was on the air screw and adjust the idle screw and possibly the throttle cable at the throttle housing.

[bansheenoob]

Ok bad news are in; there is no more spark what so ever so its not a carb issue. I tried switching spark plugs and by passing my kill switch(old piece of...) but nothing..

 

I'll make another post in the repair section..