1990 R3500 454 crew cab dually need help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

10-10-2024, 09:13 AM

#17

SCOTI

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Join Date: Apr 2001

Location: DALLAS,TX

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Re: 1990 R3500 454 crew cab dually need help

Quote:

Originally Posted by Pontiac1976

SCOTIYou be right , unless it be switched to carb.

SCOTI you could be right about the vapor lock related issue, but if timing off. That can cause similar problems since he had the Dist. out put new one in. is it bang on or is it off by one or two teeth or + or - any will mess with timing. big Vacuum Gauge really help telling you info.

Agreed.

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