The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Help!!!1968 6cyl w/New exhaust manifold and rebuilt carb. Runs like crap

68gmsee · 08-27-2012, 07:21 PM

I doubt it's the heat riser. It's primarily for cooler weather to help warm up the carb/intake manifold faster. Most of those would rust open or shut and most people would just cut them out or wire them open if they were able to do so.

As mentioned above, disconnect the choke and see what it does.

08-27-2012, 07:21 PM	#3
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Help!!!1968 6cyl w/New exhaust manifold and rebuilt carb. Runs like crap I doubt it's the heat riser. It's primarily for cooler weather to help warm up the carb/intake manifold faster. Most of those would rust open or shut and most people would just cut them out or wire them open if they were able to do so. As mentioned above, disconnect the choke and see what it does. __________________ 68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive...