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68gmsee · 06-23-2013, 02:36 PM

HEi or points distributor? Have you double checked the timing?

Since you have replaced the carb be sure and also check the vacuum advance for leaks or not working and for any other possible vacuum leaks. If you have a brake booster disconnect it and plug the hose and even modulator lines if you have a 350 tranny. Basically eliminate any possibility of vacuum leaks.

Last but not least, make sure the fuel pump will pump at least a pint of gas into a plastic container in less than 30 seconds, put a meter across the battery posts while it's idling and insure you have app. 13+ vdc. If you have an HEI, check that it's getting a full 12vdc and you're not using original wire from firewall which is resistive.

06-23-2013, 02:36 PM	#5
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Bad Gas??? HEi or points distributor? Have you double checked the timing? Since you have replaced the carb be sure and also check the vacuum advance for leaks or not working and for any other possible vacuum leaks. If you have a brake booster disconnect it and plug the hose and even modulator lines if you have a 350 tranny. Basically eliminate any possibility of vacuum leaks. Last but not least, make sure the fuel pump will pump at least a pint of gas into a plastic container in less than 30 seconds, put a meter across the battery posts while it's idling and insure you have app. 13+ vdc. If you have an HEI, check that it's getting a full 12vdc and you're not using original wire from firewall which is resistive. __________________ 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...