Re: hard starting 4.0
Well, im still having a hard time starting the truck after it has sat overnight. Once it starts it only hesitates for a second at the most and idles pefectly. The weird thing is I can go t work for nine hours go out and it will fire right up, and its just as cold. the other day it was warmer out (34 degrees) and it fired right up. Like I mentioned before ther are no driveability problems what so ever, and the gas mileage hasnt changed. Could a sensor cause this?
I heard it could be the upper intake gasket leaking when cold, but My truck idles perfect as soon as it starts. Thanks