I initially thought that was the issue. I had a gas tank leak. I ordered a new one when I replaced the tank I discovered it had the original cork float that was deteriorating. I was relieved. I thought exactly what you described was happening and I solved my problem. New tank, new fuel line and new sending unit. Nothing changed.

I ordered and will be installing an inline fuel pressure gauge in front of the carburetor. If I do have vapor lock, what should happen to my pressure reading. Would it drop or go up. I am thinking if the gas is vaporizing pressure would go up, but wanted to get feedback from the experts.

Last edited by dgrinnan; 07/14/2025 11:22 AM.

Dave from Northern Kentucky
My 54 3100