tomnjenn05
+1y
I have a 98 crew cab dually with a 454. I have noticed the last two times driving it that when going down the road and letting off the gas it starts to pop in what sounds like the manifolds. It doesnt have any cats on it. it just started to do this about two weeks ago. Any help would be nice. It did have a small miss to it before and just havent got around to doing a tune up but wasnt sure if that would fix this problem.