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72SB · 02-18-2023, 02:27 PM

OP

confirm your vacuum advance is working correctly. Ideally use a mighty vac and increase vacuum to what the truck makes and confirm the VA travel is not sticking.

02-18-2023, 02:27 PM	#17
72SB Registered User Join Date: Apr 2022 Location: Moorpark, CA Posts: 775	Re: Bog/rough running at 70mph OP confirm your vacuum advance is working correctly. Ideally use a mighty vac and increase vacuum to what the truck makes and confirm the VA travel is not sticking.