Major oil leak

[maddawg89]

Hi! My father has a 96 f250 PSD 2x4 with e4od he bought brand new. We were headed to work the other day and it was jumping and bucking and skipping REALLY bad. Like it was out of oil. Which we know it wasn't cause we just topped it off. Anyway, we made it about 7 miles till we just pulled over. We looked under the hood and the firewall was covered in fresh oil! We've known the HPOP was leaking pretty bad. Usually about 3 quarts a week, but not sure about this. Gonna try to take a good look at the ol gal this weekend, starting at the HPOP but just thought I'd check to see if y'all had any ideas? He has 370,000 miles on it. It is high time he replaced some gaskets and seals I know. Lol. Is there any other major leaks common to your trucks that I'm not aware of? I assume they should be the same as my 99 PSD......

[Patrick Feeley]

If you dumped that much oil (I did the same once), check the HPOP hoses. Look especially at the joints to the HPOP and the heads as you could have lost one of the o-rings. Also check the head plugs (and ICP) for the cylinder positions that don't have the HPOP hoses going to them (they have the same o-rings). Cheers!

[Fordman247365]

If the seal on the EBPV went out it dumps oil fast, just something else to check while in there

[maddawg89]

Alright! Thanks guys. I keep hearing about it but have no idea what it is: what is the ICP?

[Fordman247365]

Front of the driver side head, to the inside, there is an o-ring on it, but I think your leaking hpop decided to finish what it started LOL

[maddawg89]

That o-ring is called the ICP?

[Fordman247365]

No, the ICP sensor has an o ring on it

[maddawg89]

Gotcha! Ok, thanks!

[Patrick Feeley]

On each head there are 4 ports on the inside upper edge (sort of one for each cylinder). One of the ports on each side has the HP oil hose going to it (o-ring at the joint). On the driver's side front port, the ICP threads in with an o-ring to seal it. All the other ports are sealed with plugs (2 on driver's side and 3 on passenger side, O-rings for each of those). If you need part numbers for the O-rings:

High Pressure Oil Supply Fitting O-Rings
(Ford) 5C3Z-9N693-A, (International) 1823790C1 (o-ring for HPOP hose to pump joint)
(Ford) F4TZ-9N693-A, (International) 1815874C1 (o-ring for HPOP hose to head joint, plugs, and ICP)

If you do try to source your own O-rings, make sure they are Viton and not Buna-N. Cheers!

[maddawg89]

You guys have been great! I really wanna get him back in his truck. He bought "Patsy" brand new, sold her to a company he worked for, then switched companies, which bought the truck, then went in business himself and they gave her to him. So three owners but he has put every mile of the 370,000 on her.usually he has to come to my rescue when my 99 tears up. All your help is much appreciated!