The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - whats the cause for backfire thru exhaust while shifting??

jasonroman · 12-11-2012, 10:35 AM

damn. didnt expect there to be 100 possibilities...
im pretty sure fuel pump was put in prior to me buying truck. looks new.
then again. the truck sat for almost 1yr since p.o. passed.
guess i got alot to learn.
aside from the backfire. which i thought the cat would fix. and if not, maybe the fact that i have a muffler from a 350 truck on the str8 6 with no tailpipes might have been the culprit.
but the fact that when im driving and get on the gas there is a hesitation, leads me to believe i might have a couple things wrong.
needed a daily driver. this one turns on and takes me to and from work. so its serving purpose. would just like to get to the bottom of the little flaws.
truck has number of issues...guess if i were more of a mechanic id be able to pin point it better.
i know the timing is set a bit advanced.
and a guy at work said he smelled the truck. said to be running rich?

12-11-2012, 10:35 AM	#9
jasonroman Registered User Join Date: Jul 2008 Location: sayreville nj Posts: 1,072	Re: whats the cause for backfire thru exhaust while shifting?? damn. didnt expect there to be 100 possibilities... im pretty sure fuel pump was put in prior to me buying truck. looks new. then again. the truck sat for almost 1yr since p.o. passed. guess i got alot to learn. aside from the backfire. which i thought the cat would fix. and if not, maybe the fact that i have a muffler from a 350 truck on the str8 6 with no tailpipes might have been the culprit. but the fact that when im driving and get on the gas there is a hesitation, leads me to believe i might have a couple things wrong. needed a daily driver. this one turns on and takes me to and from work. so its serving purpose. would just like to get to the bottom of the little flaws. truck has number of issues...guess if i were more of a mechanic id be able to pin point it better. i know the timing is set a bit advanced. and a guy at work said he smelled the truck. said to be running rich?