Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hi, welcome to Just Answer. I’m Ron and I’ll be helping youtoday.Before we get started though, Please understand that I don't knowyour skill level or tools you have to assist us. Also understand thatI can't see, smell, hear, or touch the vehicle either, so patience isappreciated. JA is a great Q/A site, but it does NOT replace arepair shop.My goal is to make you happy and get a great rating in return formy time. Sometimes I have to give you bad news that I know youdidn’t want to hear, so please don’t shoot the messenger.
Vapor lock happens when fuel boils which is right at 100 degrees. The carb is to old to have a hot idle compensator, so you need to vent it good somewhere like at the bowl. Vapor lock never happens on newer cars with high pressure pumps because the fuel is moving to fast and doesn't have an opportunity to sit an boil. Another goofy way that I saw to prevent vapor lock, and it did work but looks stupid, was to put clothes line wood clips on the fuel line so the heat would get dissipated to the wood. It worked too.