pre round up carb problem! help!!!!!

I just installed my offy 4x2 intake with the rochester carbs and i cannot seem to get them to idol any less than 1500rpms unless i push down really hard on the linkage arms then it will come down to about 800. I was told to put a return spring on each arm but i think as hard as i have to push the springs would have to be so stiff that i would hardly be able to push the gas peddle.please help i am running out of time!!!!!!!!!!!!!

 

What mods have you done to the carbs......are all 4 running at once......progressives linkage or straight.......jetting..............all vacuum ports closed......Answer these questions and I might be able to give you some help...
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if you look down the carbs, are all the throtle plates closed all the way???

 

I have not done any mods nw speed equipment built this setup the only mods i know of are longer throttle shafts all the carbs work at once and no matter how i set the linkage i cannot get them to close enough

 

disconnect the linkage and see if the throttle plates will close all the way.

 

spray carb cleaner at the base of the intake,and at the base of the carbs.if the idle goes up you have a va***e leak.

-danny

 

they are closed all the way i check after your last post thanks for the advice

 

i thought vacuume leaks made it idle low

 

turn each air fuel mixture screw all the way in. back em out 2 turns.

did you use new intake gaskets?

 

Just the reverse! Sounds like a air leak to me also!

 

whats the timing set at?

 

did that , turned them all the way in and out 1/2 turn untill it ran smooth(at 1500 rpm)

 

I'll come over round lunch time.

 

15 deg. adv

 

Hook up a temporary spring on each carb for safety, disconect linkage (possibly where arms clamp to shaftsmight be best) and go round the 4 carbs several times with engine idling until you have carbs adjusted (both speed screw and mix screws) to lowest possible idle. then move each off idle a bit and see if each returns to where set--if not, there's a sticky issue in throttle bodies. If all returns OK, reattach linkage without disturbing carb shaft positions and see if wholedamnthing will return to low idle.

 

Call NW & ask him!

 

I posted up a tech link on this - check out the Tech links at the top of the section.