1965 Chevy Nova Vapor Lock

1965 CHEVROLET NOVA
67,000 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
N2TONY20
  • MEMBER
  • 2 POSTS
I have a 65 chevy II nova. when the engine gets to temp it will run very rich and stall out. it will not start on its own, after that. if i pour gas into the carb it will start long enough to burn off the gas i poured into the carb, and then dies. after a few times it will usually stay running long enough to get me home. when i pour the gas into the carb the gas actually boils in the carb. i dont believe the carb should be that hot and i think the reason it works after a bit is the gas cools the carb enough to run. what would cause the carb to get that hot and how can i fix it. any other ideas would be appreciated. the entire fuel system is new or rebuilt from the gas tank all the way to the carb.
Mar 9, 2009 at 5:22 PM
Advertisement
Avatar
RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Use fuel with lower volatility or you can try to shield the fuel pump and fuel line.
Mar 9, 2009 at 5:53 PM
Avatar
N2TONY20
  • MEMBER
  • 2 POSTS
I am using 87 octain from the reg pumps should i be using something else. i have tried the 91 but doesnt make a difference.

how do i shield the pump?
Mar 9, 2009 at 5:56 PM
Avatar
MGIBB101
  • MEMBER
  • 3 POSTS
I was having a similar issue with my 66 Nova after I did a motor swap. I solved my problem by relocating my fuel line to the pump, onto the outside of the frame rail. My headers were causing a vapor lock in the line.
May 16, 2009 at 10:16 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.