why do i have to spray gas in the throttle to crank it I a new air control valve I put throttle position sensor do you have to spray gas to crank it it want crank by itself help me
You need to verify fuel pressure. This could be either a fuel pump or leaky injectors, spider lines, and fuel regulator. Fuel pressure should be 56 to 63 lbs. Putting gas in threw the throttle body and it fires up is a dead giveaway.
Search GMC Sierra 1500 Questions
GMC Sierra 1500 Experts