The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Lot's of popping and cracking on deceleration...

lilred67 · 05-15-2009, 12:54 PM

put an h pipe in your exhaust system it will take alot of the popping out of it. a possible reason your engine is doing it alot is a lean mixture at idle. there is not much fuel in the cylinder coasting a long way causing the the popping.... might could richen your idle fuel mixture a little to help it..

05-15-2009, 12:54 PM	#6
lilred67 Senior Member Join Date: Mar 2005 Location: weatherford,texas Posts: 1,003	Re: Lot's of popping and cracking on deceleration... put an h pipe in your exhaust system it will take alot of the popping out of it. a possible reason your engine is doing it alot is a lean mixture at idle. there is not much fuel in the cylinder coasting a long way causing the the popping.... might could richen your idle fuel mixture a little to help it..