34 PICT 3 Weirdness

vwlover77 · Post by **vwlover77** » Mon Dec 29, 2008 8:02 pm

I'm pretty sure the throttle shaft bushings in the 34 PICT 3 carburetor on my '71 Beetle are worn. However, the symptom of worn bushings is supposed to be an idle that cannot be adjusted, and I don't seem to have that problem.

The problem is after I turn the car off, raw gasoline appears on both ends of the throttle shaft where it exits the body of the carb. It really smells bad!

Is this due to worn bushings or some other problem? Where is the gasoline coming from after the engine is shut off?

vdubyah73 · Post by **vdubyah73** » Tue Dec 30, 2008 4:29 am

Boiling out of the bowl thru the accelerator pump nozzle. Does it only when warmed up?

vwlover77 · Post by **vwlover77** » Tue Dec 30, 2008 7:20 am

vdubyah73 wrote:Does it only when warmed up?

Yes!

vdubyah73 · Post by **vdubyah73** » Tue Dec 30, 2008 2:59 pm

Warm it up good and look down the throat rite after shut off. Prolly have to watch for a time to give the gas time to heat up. Look for dribbling in the throat of carb.
This would explain a hard warm restart that could be a flooded engine if trying to start back up after a short stop, or no gas left in carb until fuel pump refills it.

vwlover77 · Post by **vwlover77** » Tue Dec 30, 2008 3:28 pm

What's the cure for this? Thicker base gasket to insulate the carb body from the heat?

vdubyah73 · Post by **vdubyah73** » Tue Dec 30, 2008 3:43 pm

I would imagine a good rebuild kit would stop accelerator pump leaking. If that's what's going on.

Study kiefernets posts on stock carbs.

Itinerant Air-Cooled

Itinerant Air-Cooled

34 PICT 3 Weirdness

34 PICT 3 Weirdness