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68gmcdude · 05-24-2021, 08:05 AM

Thanks for the reply. I'm also looking for the order in which I should do the tuneup. Do I start with the timing? And how do I make the adjustments to the RPM's and fuel mixture on the carburetor... thanks!

05-24-2021, 08:05 AM	#3
68gmcdude Registered User Join Date: Jun 2017 Location: Mentor, OH Posts: 126	Re: GMC 250 Inline 6 Tuneup Thanks for the reply. I'm also looking for the order in which I should do the tuneup. Do I start with the timing? And how do I make the adjustments to the RPM's and fuel mixture on the carburetor... thanks!