Long crank at normal tempreture
 

Hello: Thanks for opportunity to be part of your forum.
Name: Kenneth Leerdam

I have a F250 6.0 2003 04 engine. Three years ago I change the following: both engine oil pressure pumps; right side fuel injectors. November 2017, I replaced the left side: injectors, FICM, and injectors wire harness. Two days ago I notice it started to give a long crank when hot but if I stop cranking and immediately try again it starts right away.
The following condition I read off the scan gauge: ICP, key on 48 psi; engine running 640-736 idling. Note: I have the upgraded ICP sensor. IPR; 15-29 % and acceleration 33%. once about a fraction of second 55% during acceleration that burn tires. FICM: 48 volts key on and engine running 47-48. Please, if anyone experience something similar, could be so kind to share your remedy for said problem.

Hope I address clear enough.

Regards

Kenneth Leerdam

The most useful value for ICP is when you are cranking (hot) and it ISN"T starting.

Can you post that value (along with the % IPR duty cycle)?

That said, it doesn't exactly have all the signs of a high pressure oil problem.

Therefore, I would also watch the FICM MPower and LPower and VPower when the problem is showing itself.

Lastly, if you don't have a fuel pressure gauge, I would get one. As our 6.0L's age, we see more and more fuel pump issues. You don't want to ruin expensive injectors because you don't catch the problem early enough.

Hello Diesel Bombers.
I have f250 6.0 2003; I post the problem I was experiencing during hot start. This is my findings: at operating temperature when starting ICP sensor key on 640 psi no start. cycling the key approximately three times the pressure reduce to 49 psi; engine start immediately. Not sure if ICP sensor or pig tail is the problem.
ICP was renewed November 2017.

If anyone can relate to this problem I would like to get feed back on the above information.

K leerdam