I have a 1998 Blazer LT (6 Cyl) that started sputtering whiile driving. Died a few times at stop lights, and now wont start at all. ODB II scanner came up with no codes but the service engine light is on.

Fuel pressure test came up with 60+ lbs, which should be fine from what I know. Checked for spark and it is getting it. The fuel pump is priming the lines just fine, and the truck tries to start but just wont. Anyone have any ideas on this?

 

Someone suggested the EGR valve is stuck open, but as the engine is stone cold, I dont see it as likely.