202 won't idle! Any help much appreciated..

[frenchyvh]

Gday guys,
I have just freshly built a warm 202. I have given it a holley 350, the motor starts and runs quite easily on the 2nd crank, however it refuses to idle or hold at a certain amoutn of revs, i have to pump the pedal for the motor to continue to run after i have initially started it. In doing this the motor will rev up fine then if i dont pump the pedal again it drops in revs almost to the point of stalling and will stall unless i give the throttle a little jab. I'm guessing it's only running off the accelerator pump? Would anyone know what may be the problem with the carby?
Thanks in advance,
Cheers, Rhys

[fatboy2869]

Do u have a choke on the 350 holley and is it only doing it when it is cold like when u first start it mine has been doing the same thing and i have to sit there for about 3 to 4 mins with the accelerator at half peddle for it to warm up befor i can drive it as the choke is that but i dont have it all hooked up yet

[frenchyvh]

It has a manual choke which i haven't set up yet. I don't think it's the choke though as i cant hold the car at half throttle, it just wont hold, i can only get it to half throttle by pumping the throttle, I;m guessing it's something else but i'll give it a whirl.

[fatboy2869]

OK also is the cabie new/reco/second hand and have u set the idle up on it to suite the car IE the mixer screw and the idle screw as they might be set up wrong also cheek your dizzy if it is to far advance or retarted it wont idle and hve u got the vacume advnace set up as well

[J_D]

It has a manual choke which i haven't set up yet. I don't think it's the choke though as i cant hold the car at half throttle, it just wont hold, i can only get it to half throttle by pumping the throttle, I;m guessing it's something else but i'll give it a whirl.

I used to have a VH with a 202 and a 350 holley and the only way to keep the engine running was to set the choke to exactly the right spot, if was out by even a small amount it wouldnt run and you couldnt hold it by pumping the throttle. I wouldnt worry too much about it unless it still does it with the choke operational.

[fatboy2869]

How did u go with it and is it running fine now

[mrrabbit]

Try the inlet manifold make sure all the vac hoses r connected i had same trouble 2 day with the HZ 202

[Trav001]

my VH 202 is difficult to start of a morning and when it's been sitting for like 8hrs and idles realy rough (due to having a 1/4 cam). the manual choke comes in realy handy, and once it's warm. it will then start 1st time every time.

[frenchyvh]

I've found the problem! I hadn't installed the inlet/exhaust manifold gasket properly therefore causing it to suck air! Also there was a vacuum pipe on the carby which was not connected, hence sucking more air. No wonder it was running like a pig. It's at the mechanic getting a final tune at the moment, thanks alot guys