Quote:
Originally Posted by 41ford1
I glad you cured the problem. The thing that bothers me is the video you posted of the trail of bubbles in the clear tubing. Is the heat source causing the vapor lock condition the under hood temps or the exhaust pipe heating the fuel line from the tank? It is also possible there is a leak in the fuel line that allows air to be drawn in when the pump is pulling fuel when the engine is running. I would be inclined to monitor the fuel line to be sure no fuel is leaking under pressure from the new electric pump.
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Through my testing I've concluded that the vapor lock starts in the fuel line coming up and attached to the fire wall. That was the source of the bubbles in the clear tube. I had thought the same thing about the fuel line over the exhaust pipe so insulated it. Didn't help. Fuel line is now all new and no leaks.