[Tomastopher]

New here but have been reading posts for a while and found them helpful in the past so I decided to join.

Currently have 2003 7.3 with 363 k miles and was having a random warm no start. Wouldn't start with icp sensor disconnected so I replaced the sensor. Afteward it would not start at all. Got a Bluetooth single and torque pro and got the following data

P1280 icp 383 during cranking (too low for fire I know) ipr duty cycle 24-35% with a quick peak of (split second) 63.4% changed oil 700 Miles back during oil cooler rebuild. Did fuel bowl fill without separator and fuel did not have oil in it.... Does this indicate hpop failure since ipr seems to be functioning given my readings??

Thanks in advance

 

[Maryland dieselnick]

Hi and welcome to the forum, so when pressure is down and duty cycle is elevated, it means you have a hydraulic leak. Hot no start or long crank is another indicator.
IPR orings can cause this as will bad hpop line fittings and leaking orings.
If the middle injector oring is the fault, the fuel will look tea or cola colored. If it's the top oring you will see it coming out from the injector bore.

 

[Tomastopher]

Thanks for the info. As I mentioned fuel was clean so maybe just an ipr rebuild. Lines are not leaking either so I will try the rebuild first and see what happens....

 

[Maryland dieselnick]

K, let us know

 

[Tomastopher]

Will do

 

[Tomastopher]

Got it out and disassembled, eaned and reassembled. Checked resistance and got 43.3 from what I'm reading this seems high. 10.3 seems to be normal. Is my solenoid shot?

 

[Maryland dieselnick]

Yep.
Buy a new Motorcraft, Alliant or Napa Echlin.

 

[Tomastopher]

Cool. Thanks. At least I know how to rebuild one now...

 

[Maryland dieselnick]

Pitch the coil and bag up the rest for spare parts.

 

[Tomastopher]

Will do. Thanks again for your help.

 

[Maryland dieselnick]

Glad to help

 

[Tomastopher]

Got a part number for the echlin unit? Napa clerk couldn't come up with the part from his search. I know my neighbor got one there but he's out of town...

 

[Tomastopher]

Never mind, found an alliant from thoroughbred for $176. $100 less than napa and will arrive same time as napa part would have.

 

[Tomastopher]

Update: received alliant ipr from thoroughbred diesel last night. Installed it this morning, refilled the hpop and she fired on the first try. I would also like to add that it is not necessary to use any special tools or remove any other components to do this repair. 11 mm wrench to remove the solenoid and spacer and then a 1-1/8" box end and some patient small turns got it done for me. Thanks for the advice and help.

 

[Maryland dieselnick]

Box end? Did you take the fuel bowl out?

 

[Tomastopher]

Didn't take anything but the ipr out. It takes a minute this way but it worked. Very very small turns of the wrench with lots of flipping to get that next little bit if turn for readdress.

 

[Texkenusmc]

I got the special tool at advance last week for 5 cents they had discontinued it and it was the last one. Should have seen my face when he rang it up.

 

[Maryland dieselnick]

Wow, might be done scontinued and still available at other Advance.
Do you by chance have brand and or pert number?