2002 7.3L won't start when motor is warm..?

[thepossum]

I already changed the cam shaft sensor. Rolls over fine, just will not fire.. seems like only when motor is warm.. if i wait a long while for it to cool down, it starts right up. i checked glow plug solenoid with test light and it seems to be fine. what do you think?

 

[94f450sd]

sounds like possibly injector or IPR orings.

 

[Brianedwardss]

Just went thru this exact issue on an '02 last week. It ended up being the IPR

 

[thepossum]

Did you have to change the entire IPR or did you change the O'ring kit? And how much did it cost you?

 

[94f450sd]

usualy it just needs a cleaning and new orings.last time i bought one i think it was around 200-250.00.take it out and clean it with brake parts cleaner.i think the oring kit was around 20.00.

part numbers for the o ring kit

IPR O-Ring Kit (for when IPR valve replacement is not required)
(Ford) F6TZ-9C977-AN (F6TZ-9C977-AA?)
(International) 1825806C92 (1825806C91?)

ipr part numbers

IPR Injection Pressure Regulator
(Ford) F4TZ-9C968-C (engine serial no. 187099 & before or pump no. 255C92)
(International) 1824982C91 (engine serial no. 187099 & before or pump no. 255C92)
(International) 1833798C91 (All Years ???) latest part number
(Ford) F81Z-9C968-AA (engine serial no. 187100 & up or pump no. 247C91)

 

[Brianedwardss]

We replaced the whole thing because the plug on the IPR itself was broke, which is something I've seen happen twice now. The metal locking-hoop comes loose, then the short harness vibrates/pulls upward on the now-loose plug and cracks the top plastic on the IPR plug.

If you can get a look at the IPR, see if the metal hoop is loose. If its secure, you may get away with just replacing the O-rings. If it's loose, good chance the plug is messed up on the IPR itself.

 

[thepossum]

wow.. thanks for all that helpful info.. this is the first time I've ever went to a forum and have had this computer point me in the right direction.. I'm glad there are still good people like you on this planet. .. Tomorrow morning i'm going to start working on this project.. You might be hearing from me again.. but hopefully not real soon. haha

 

[thepossum]

just checking sig..