HALP Quadrajet dribbling
Don.F.Broadus at ucm.com
Don.F.Broadus at ucm.com
Tue Jan 19 22:50:29 GMT 1999
If it hasn't been brought up already, I would check the idle air bleed
passages by running a fine wire through them to clean them out.
It is just a thought.
> -----Original Message-----
> From: Sandy [SMTP:sganz at wgn.net]
> Sent: Tuesday, January 19, 1999 3:42 PM
> To: diy_efi at efi332.eng.ohio-state.edu
> Subject: Re: HALP Quadrajet dribbling
>
> The beloved QJet, my favorite carb!, A couple of things can cause the
> dribble. Some QJets have bad seals under the wells for the pri jets, Check
> under the main bowl for fuel leaks. Most QJet books show some repair for
> this, the second thing is to check the accelerator pump as it may be
> missing the ball bearing that stops fuel from getting sucked into the
> engine (I think this is true, been a long time), Check for vacuum leaks
> and general top gasket leaks, and use a vacuum gauge to see if it is
> steady, if not, your enrichment circuits (the piston with the needles
> attached) will pop up and will cause fuel to pour in. If this is the case
> you will need to bump the idle a bit or find the leak, maybe bad pvc or
> hose. Also sometimes you can cheat by bumping the timming to get some more
> rpm at idle.
>
> Sandy
>
> At 12:33 AM 1/19/99 -0800, you wrote:
> >
> >
> >Howday all
> >
> >Hope you don't mind a excursion into history
> >
> >Relative has a quadrajet equiped car which must pass smog
> >To get the cat to light CO must stay below 1%
> >We can get this adjustment but dribbling from the
> >primary venturi booster sets in.. randomly.
> >
> >One minute the CO is 0 % cat on and next
> >minute is 5% cat drowned not lit.
> >
> >Does anyone remember how to cure venturi dribbling
> >I managed to do this once by increasing the idle
> >feed restrictions but smog won't allow me to do
> >this..
> >
> >Any ideas please
> >
> >TIA:peter
> >
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