Hi 69myway

Hworrel said it all. If you have already ensured that the needle and seats are new and clean, you are left with two other possibilities. If you have the tin floats, my guess is that one of them has a tiny hole in it and as time goes by, they slowly take on gas and start sinking, thus allowing more fuel into a bowl that is already full. If you shake the float, you will hear fuel sloshing around in them.

Secondly, have you checked the settings of the float levels? The observing hole is on the side of the bowl and has a flat slotted screw in it. Remove it and then start up your vehicle and check to see if the gas is flowing out of the side. If it is, set the level lower. If you do not know how to do this part of operation, just ask. Furthermore, if you have faulty floats as described above, then you will never be able to set this level correctly.

Thirdly, your fuel pump maybe over zealous. Install a fuel pressure gauge to see what fuel pressure you have. 7 psi is about the maximum the floats can handle.