I have a 1984 ram 318 with a rebuilt Holley 2280. I bought the truck in January 2103. It has 68,000 miles.

The previous owner had the rebuilt carb installed about 3 weeks before I bought the truck. When I bought the truck the charcoal canister was disconnected and the vent line from the gas tank was unplugged. The other hoses from the canister were plugged. I have reconnected the canister because I was getting a strong gas smell in the cab.

The truck is hard to start cold. It needs to be pumped several times and sometimes starts and sometimes it takes a couple of minutes. Once it is started it runs fine and if it is driven a short distance and stopped will start up with no problem. Engine runs smoothly and acceleration is okay.

The problem is if it is driven for around 50 or more miles and stopped. If you restart within 5 or 10 minutes there is no problem. But if you wait longer, even to about 1 1/2 to 2 hours then it floods badly to the extent that gas is flowing out of the carburetor. If it does start then it is running
very rough due to the flooding and will not stay running. After about 3 hours it will start with no problems.

Any ideas will be appreciated. I am not the best mechanic but am willing to
try and learn.

 

you might want to take the top off the float bowl and have a look. if the previous owner disconnected the charcoal canister and rebuilt the carb then i am guessing that charcoal was starting to get into the carb. you may want to get a clear fuel filter and put it in the charcoal canister line that runs to the carb to prevent any more charcoal from getting in.

 

Thanks, I will try this today.

 

You might also want to just put a phenolic block between the carby and the manifold. This will also stop vapor lock when off roading in the heat.