I just put injectors in today now here is problem truck starts fine. idles rough like a sparkplug miss or a car only running on 7 of 8 cyls truck shakes bad if I give it gas truck stumbles really bad when it gets up high in the rpm's it clears up some if I put the truck in nuetral it idles a little smoother but still rough it also smells like diesel fuel when I got back from store what should I look for