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al's71gmc · 10-25-2006, 12:56 AM

Mine had the same type of hesitation. A mechanic told me the carb was warped and it had a serious vac leak. He offered to put a rebuilt qjet in it for only $680! I opted not to do it. After putting in a recently rebuilt carb, the same thing happened. I had to set the timing all the way to about 25 BTDC. I think the PO put the distributer in wrong. I think he had it at TDC on the exhaust stroke instead of compression/fire. I haven't had a chance to check it yet, but it runs great when set waaaay advanced.

10-25-2006, 12:56 AM	#4
al's71gmc 4 eyed fever Join Date: Jul 2005 Location: Eureka, Nevada Posts: 500	Re: Engine Hesitation? Mine had the same type of hesitation. A mechanic told me the carb was warped and it had a serious vac leak. He offered to put a rebuilt qjet in it for only $680! I opted not to do it. After putting in a recently rebuilt carb, the same thing happened. I had to set the timing all the way to about 25 BTDC. I think the PO put the distributer in wrong. I think he had it at TDC on the exhaust stroke instead of compression/fire. I haven't had a chance to check it yet, but it runs great when set waaaay advanced. __________________ 1971 GMC 2500 4x4 1972 GMC Sierra Grande 1/2 t 4x4-#1 son's truck. Recently completed resto. 4 YO daughter," Daddy, I like your truck better than Mom's." (2000 F350-ranch truck) Smart kid!!