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Old 03-04-2012, 05:54 PM
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Originally Posted by 123pugsy
Idle mixture screws have nothing to do with setting idle speed.

Idle speed may change however when using your vacuum guage to set the idle mixture screws.
Oh, so its strictly a timing issue then.

Btw, I just tried adjusting the idle screws down to 5 full turns ,and then 4 full turns. Both times, the truck started up and revved with no issues and immediately shut off when the ignition was cut. So I am hoping that, at least for the time being, the engine is in an acceptable operating zone in case i need to move it before getting to the timing.

And I also wanted to ask about a part that fell out of the carburetor today while cleaning it. I never saw this part when I did the rebuild. But it seems like fell out where the the key and the rod for the choke plate. Any ideas what it is?

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