The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Engine running rough below 3k RPM. Fine above it. ???

**Getter-Done** · 11-18-2023, 11:43 AM

I suggest Sea-Foam to start with.

Link: https://www.amazon.com/Sea-Foam-SF-1...99526675&psc=1

11-18-2023, 11:43 AM	#2
Getter-Done Senior Member Join Date: Dec 2009 Location: TN. Posts: 7,816	Re: Engine running rough below 3k RPM. Fine above it. ??? I suggest Sea-Foam to start with. Link: https://www.amazon.com/Sea-Foam-SF-1...99526675&psc=1 __________________ ________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build