Quote Originally Posted by geezer101 View Post
Something else - ambient heat in the engine bay. The Weber will be pulling a lot of hot air. Seems these trucks suffer from heat soak and some added ventilation and air flow makes a difference. I agree that your warm idle speed is a little on the high side too. Dialling it back to at least 850 rpm should have some impact on the run on issue.
yeppers i thought of that too geezer thats why this summer i bought a hood scoop and installed it.
it did seem to help some what but then the old demon came back.
i did find a new mechanic today that isn't going to charge me an arm and a leg to check it all out next friday he said after listening to it and putting a timing light on it and getting the timing back right on the money he said that he didn't think that it was a matter of too much fuel going to the carb that it had to be something else.
he is going to do a fuel pressure check and see what's what.