496 dieseling when shut off
I just read 100 threads on dieseling and I feel I have everything adjusted and 496 still diesels at shut off. The timing is set at 13-14 initial with 39-40 total and no vacuum advance on MSD distributor. I have the car idling at 800 rpms. This is the first time ever using a speed demon carb, it's an 850cfm. Idle screw are 1.25 turns out. Not sure on the secondary side how far the blades are open. I read there is also a idle screw in center of carb under air cleaner stud is.
What should I check now to get dieseling to stop. The 496 has large solid roller as well.
67 Camaro Pro Street, 540 Bill Mitchell Merlin big block, Merlin Aluminum heads, Holley 870, hydraulic camshaft, 2" Hooker Super Comp headers, Mallory and Crane ignition system, TH400, 2600 stahl, Ford 9" w/ 4:10 gears and posi.