Quote:
Originally Posted by 1972BlueC20
As for why I think the fuel is running back down the line it's because after the truck sits and the gauge shows 0 Psi you can take the fuel line off the feed line and nothing comes out but a few drops. If you try that with the pressure still reading it squirts all over the place.
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Is the choke all the way open when the engine is hot after the fuel pressure goes to zero? Maybe by that time it's started to close and is too rich/hard to start hot.
Mark where you have your choke now so you can go back, but try leaning the choke out a little maybe.
Maybe a phenolic carb base adaptor would help, I suppose it's possible for the fuel in the bowls to be getting too hot but I've stayed away from that because it starts right up cold. I suppose some of it could be vaporizing allowing the float to sink and draining the fuel back into the line and down. This would explain the 0 fuel pressure phenomenon and the vapors maybe flood the engine though vapors usually light off easy.
After engine hot, fuel pressure 0, crank it but not till it starts yet. Remove a plug and see if it's wet.
Something like this with 4 individual holes, and 4 hole gaskets. If you went open adaptor you would lose some responsiveness. Comes with gaskets and studs. I'd go no thicker than 1/2" unless you are sure your cables and linkages will still reach.
http://www.summitracing.com/parts/edl-8723/overview/