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Aarongriffey · 03-01-2021, 03:55 PM

I had horrible vapor lock problems on my ‘46 V8. Especially in stop and go traffic on hot days.
I went back to single exhaust and never had the problem again.
This week I am installing a new gas line on a ‘46 Mercury with dual exhaust system.
The fuel line was two inches from the left exhaust pipe and the electric pump was four inches from the rear of the left muffler.
I am putting the new fuel line on the OUTSIDE of the left frame rail to lessen the chance of heating the fuel and vapor locking.

03-01-2021, 03:55 PM	#54
Aarongriffey Senior Member Join Date: Feb 2020 Location: Hayward,CA Posts: 513	Re: Fuel boiling at fuel pump I had horrible vapor lock problems on my ‘46 V8. Especially in stop and go traffic on hot days. I went back to single exhaust and never had the problem again. This week I am installing a new gas line on a ‘46 Mercury with dual exhaust system. The fuel line was two inches from the left exhaust pipe and the electric pump was four inches from the rear of the left muffler. I am putting the new fuel line on the OUTSIDE of the left frame rail to lessen the chance of heating the fuel and vapor locking.