Re: vapor lock issue
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RE: Vapor Lock
An older thread ... but I wanted to relay to you what happened to my 47 coupe recently regarding vapor lock - percolating gas. I had a similar problem...never happened before on this car.
I found that my inline metal gas filter and a long fuel line to the carb inlet, slipped down very close to my exhaust manifold. The gas was being "pre-cooked" and caused my vapor lock/percolating fuel. Pretty obvious, but the last thing in a string of recommendations. was a very simple...but correct fix.
It would be most unusual to vapor lock with fuel running through the lines. Vapor lock would normally occur when you shut off the motor and allow heat build up beneath the hood. That heat essentially boils the fuel turning it into vapor. That would be very difficult with fuel flowing constantly.