The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

irishman999 · 06-03-2010, 06:14 PM

With no lines connected its idling rough but runs ok, as i throttle up it pops and backfires. I connected the vaccume advance to one port that didnt have suction at idle and it seemed to rev up beter but still popping a little bit.

There is one vaccume port on the front that will kill the engine if i hold my finger over it.

i think the tank is really low and its running on the nasty old ass gasoline, could that be cauing the popping?

06-03-2010, 06:14 PM	#3
irishman999 Registered User Join Date: May 2010 Location: Reno Ne-VAH-da Posts: 594	Re: Quadrajet problems. With no lines connected its idling rough but runs ok, as i throttle up it pops and backfires. I connected the vaccume advance to one port that didnt have suction at idle and it seemed to rev up beter but still popping a little bit. There is one vaccume port on the front that will kill the engine if i hold my finger over it. i think the tank is really low and its running on the nasty old ass gasoline, could that be cauing the popping?