Re: Anybody got the end all cure for vapor locking?

Posted by Marty or Marston On 2022/1/10 17:19:14

Higher octane gas has less of the volatile components in it such as butane which are the main culprits in vapor lock. I would suggest using it higher octane gas instead low octane. I use to use 5 to 10% diesel in my ’70 Corvette, which wanted 100+ octane, as an anti-knock work around (along with de-tuning).

I had a friend who had an issue with vapor lock. His fix was to run a metal fuel line along the outside of the frame opposite the exhaust system side. In the engine compartment he avoided all the engine hot spots as best he could. I don’t recall if he installed an electric pump or not in order to remove using the pump on the engine.