Where do I start to diagnose why it won't start? We had the same problem a few years ago when I got the truck and put it in the shop and they fixed it but wouldn't tell us what they did for $480. I"m thinking maybe I didn't have it all the way to TDC or my wires are not in the write spot so it's not firing right. Can anyone tell me the firing order for a 2.6L? Any info always helps.