Ethanol 101

[Sunny the Model A]

Marvel seems to help prevent vapor lock during summer, here in charleston sc if you sit in traffic with ethanol fuel it can like to sputter a bit, I add a bit of marvel and it goes away. Used motor oil does the same thing.

[Hitman]

Originally Posted by Sunny the Model A

Marvel seems to help prevent vapor lock during summer, here in charleston sc if you sit in traffic with ethanol fuel it can like to sputter a bit, I add a bit of marvel and it goes away. Used motor oil does the same thing.

I’ve tried Marvel and it doesn’t prevent vapor lock. I’ve tried other things too, and it’s really the carb temp which boils off various parts of the fuel creating the lock.

[Y-Blockhead]

Originally Posted by Hitman

I’ve tried Marvel and it doesn’t prevent vapor lock. I’ve tried other things too, and it’s really the carb temp which boils off various parts of the fuel creating the lock.

I use a phenolic spacer between my Marvel and intake manifold. It seems to help with vapor lock.

I use Seafoam to address the other issues.