Itinerant Air-Cooled

After heat soaking for a while after a long drive in hot weather, the 34PICT3 in my Beetle always leaks fuel into the intake requiring lots of cranking and full throttle to restart the engine. I've checked the needle valve and float level, and installed a fuel pressure regulator, but there seems to be no cure.

vwlover77 wrote:After heat soaking for a while after a long drive in hot weather, the 34PICT3 in my Beetle always leaks fuel into the intake requiring lots of cranking and full throttle to restart the engine. I've checked the needle valve and float level, and installed a fuel pressure regulator, but there seems to be no cure.

We have discussed this, but I can't remember where . . . Fuel Delivery Forum?

Anyways, the factory fuel pumps had a cut-off valve that prevented this heat soak fuel expansion pressure increase. I have battled exactly the same thing with Chloe's junky Barzilian pump, and have a used Pierburg factory-issue fuel pump that shall get rebuilt and installed.



I think it was in 1971 and later buses and beetles that had some crazy bypass/cut-off dangling off the pump:



How can I make this information stick?
How can we obtain these factory solutions, install, and show the world that they work?
ColinHowCanIDryMySocks?

Huh there sure was some weird hardware in the 70s....