No Hot start

[MacDougall]

Okay well my truck fires up great when its cold like in the morning or its been sitting long enough to cool down, but if its up to operating temperature it wont start. it just cranks and cranks. when its cold my icp voltage while cranking is .9-1.0 and when its warm and cranking im getting .6-.7 which isnt enough pressure from what i understand. in needs to be at .8 or higher to get the 500psi to start. Now if i start it it wont die on me when it gets to operating temperature but it will loose power the warmer it gets, and my icp at idle is 1.0-1.1 when warm, and at half throttle it goes to about 2.1-2.3 and WOT it drops back down to 1.1-1.3. Any thoughts on the problem? im thinking a HPOP leak or ICP sensor.

I was going to change the sensor but wanted to see what everyones thoughts where before. maybe its not the sensor and it is a leak. i dunno im hoping one of you fellas will. Thanks.

[2 stroker]

Originally Posted by MacDougall

Okay well my truck fires up great when its cold like in the morning or its been sitting long enough to cool down, but if its up to operating temperature it wont start. it just cranks and cranks. when its cold my icp voltage while cranking is .9-1.0 and when its warm and cranking im getting .6-.7 which isnt enough pressure from what i understand. in needs to be at .8 or higher to get the 500psi to start. Now if i start it it wont die on me when it gets to operating temperature but it will loose power the warmer it gets, and my icp at idle is 1.0-1.1 when warm, and at half throttle it goes to about 2.1-2.3 and WOT it drops back down to 1.1-1.3. Any thoughts on the problem? im thinking a HPOP leak or ICP sensor.

I was going to change the sensor but wanted to see what everyones thoughts where before. maybe its not the sensor and it is a leak. i dunno im hoping one of you fellas will. Thanks.

Being an 03 you have the good STC fitting but i would look at the rest of the stuff (stand pipes&Bummy plugs)look here it could be the ICPsencer
This may be of some help
Diesel Diagnostic information for Powerstroke 6.0, 7.3, IDI 7.3 and 6.9 L, by Oregon Fuel Injection
Ford 6.0 update parts
2 stroker