Gas smell
- Thread starter Junglecat
- Start date
How old are the fuel hoses (if old could be rubber that breaks down with ethanol) that connect both your fuel pump at the tank and at the carb to your fuel line(s) in and out to return line if connected. Check the lines in/out for the charcoal canister and check it as well for leaks. What carb are you running, check float levels etc. I imagine that you checked the tank for pinhole leaks, how about the gas cap.
If a visual inspection fails to identify the source do a fuel dye test. You will need a UV light
I had what started as a small hard to see leak in the fuel pump on my 64 Pontiac. Ethanol had eaten the diaphragm. It eventually became visible . Replaced it with one resistant to alcohol and problem solved. Might be worth a look .
There are a lot of hidden pockets and valleys on an engine that a very slow leak could be sitting in. My money is on a slow leak hose or connection. I'm surprised that you don't smell gas when driving.