1970 c10 trouble on shut off

[Auroch]

Originally Posted by weim55

As Volksworld stated Throttle blade opening is key to curing this problem. You want the throttle blades as closed as possible when you shut the truck off. To cure this problem do the following : first make sure the return spring is strong enough to return the throttle blades to the idle stop screw every time you release the throttle from your foot. Second, make sure the ignition timing is set properly and not retarded. If the ignition timing is retarded it will require more throttle opening to achieve the correct idle speed. Third, adjust the idle mixture screws properly in the carburetor base. Doing all of the above then set your idle speed with the throttle blade adjusting screw. Covering all these bases will allow the throttle blades to be closed as much as possible upon shut off and should cure the problem.

Steve weim55 Colorado

Crystal clear! Will follow all these steps, thanks again.