only on a cold start ie. truck sits all day or all night, it starts fine, idles good, take off and it has very little power and u almost cant here the engine running, drive around the blok at max 10mph, it clears up and is fine for however long u want to drive it. new fuel filter, has 7 psi , has no problems and runs great once warmed up.i disconnected the ez and nothing has changed. any help would be appreciated

 

could the fuel psi regulator have a slow leak/pinhole that is letting fuel drain over a long time,

but the hole is so small the pump can keep the system full while running?

cycle the key about 3~4 times next time, that should run pump enough to refill the system, and see if this theory makes sense.

i had a a gas truck that leaked all fuel back into tank,
cycle key few times to prime the system fire right up.

 

thanks ill try it. allthough check engine light never came on, i bought a code reader today and got 0216 not looking forward to that. hope it is cauzed by another prob.