3.4 won’t start when warm

Any reason or just because?

 

Classic symptoms of a failing fuel pump.

First check the fuel pump relay, then test the fuel pump.

 

Another parallel issue I’ve had with this truck I’ve owned it has been two codes and a CEL: P0442 & P0446.

Today after pulling the bed in preparation for a new fuel pump I found the small nipple going to my fuel vent check valve broken. Not sure if this just broke or broke when I installed my bed last. I plugged the opening and did a smoke test on the tank. The vent check valve was still leaking slightly so I pulled out of the tank and saw the seal was very cracked and the housing had a few hairline cracks. So new one of those on the way!

 

New fuel pump solved my warm start issues!!!

New tank vent valve solved my CEL evap codes!!!