Starting problem Son's truck is VERY hard to start especially if it has sat for several hours and sometimes needs starting fluid help. We have cleaned throttle body, done tune up, oil change, replaced fuel filter. What else can it be? Can't really afford to take it somewhere or keep fixing the wrong things.

SOURCE: hard starts in the morning even though replaced most parts

Check the power to the cold start injector. (it's only going to have fire for a few sec. after the key is turned on). If the fire is good, replace the cold start injector. This injector is activated for a few seconds when the engen temp is low to add a little fuel lower down in the intake and closer to the pistons.

SOURCE: MY 2004 ENVOY HAS 84600 MILES HAVE DONE OIL

When starting your vehicle, cycle the key twice to pump up the fuel pressure. If the vehicle starts like normal, I would replace the fuel filter. Has the fuel filter ever been replaced??? I posted as a solution, but there is no option on this question to get more info.