Looking for a little advice on the timing numbers I just pulled from my 73’ Duster (backfire issue)

tonyp25 said

Wow! Thanks so much for all that information. It really helps me to better understand what happening with my timing and RPMs.

I’m going to try advancing it a bit today. As a newbie to distributors as well is the below circled bolt the one I need to loosen in order to turn the distributor?

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Yes and also its best to remove the hose going to the vacuum advance and stick a golf tee in it. Or remove the hose at the carb and cap the port.

When you readjust the idle mix, turn each screw in until there is a slight drop in rpm or vacuum. Then turn them back 1/8 to 1/4 turn richer.


From Chrysler