Question... I have a ea81 with weber carb setup... The problem is the car will start but wont stay at idle. it runs for like 20 sec. What do you guys think is wrong???

What have you done to try to fix it?

 

I assumed you cleaned the snot out of it and the filter? Checked the gaskets and other nuggets for leaks?

If you have 2 fuel ports on that carb, some do, most dont, you may have the inlet line hooked to the return line. There is only a pinhole in the return line. So it would run till the gas ran out. You have to see if there is gas in the float bowl when the engine dies. If there is no gas, then there is a problem with the needle valve being plugged or a gas filter plugged or there is a problem with the fuel pump. If you have fuel in the bowl, then you have an ignition problem.