Thursday, June 19th, 2008 AT 8:45 AM
The person who did a tune up on this truck bought plugs, wires, and distributer cap for a regular V6, and this truck is a V6 Vortec. He set the gap at.045 and switched everything out anyways, and now it runs rough. There is a noticable rumbling vibration when I am driving and idling that was not there before the tune-up. It also doesn't get up to speed like it used to. He said there was no difference between V6 and V6 Vortec plugs. I think there must be, or the gap is wrong. Any advice?