Major oil leak - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 01-29-2013, 05:28 AM Thread Starter
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Major oil leak

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......



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes *Wrecked 5/16


1999 F250 XLT ECSB 2wd Auto. Hydra chip, gauges, 6637, Army OD Green on stock rims...
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post #2 of 11 Old 01-29-2013, 10:43 AM
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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!

1997 F250 SC 4x4, E4OD, 4.10 LS, Basically Stock, Relocated Block Heater Plug, External Trans Filter, Tru-Cool Max, I/C Mounted but not Plumbed

SOLD - 1994 F350 CC DRW 2WD PSD, 5 Speed, 4.10 LS, SBC Con-O, Baldwin Filter, Tymar HPX Hose, DPPI DP, Bilsteins, $12 AIC, Coolant Filter, Explorer Overhead Console, A-Pillar w/ISSPRO Black Ice, EV Boost, and EV Pyro, Modified Pedestal, Gutted EBPV.
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post #3 of 11 Old 01-29-2013, 10:58 AM
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If the seal on the EBPV went out it dumps oil fast, just something else to check while in there

Elmo/Shane

96 F350 4x4
Everything.
And its expensive.

476,000 Miles


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post #4 of 11 Old 01-29-2013, 12:24 PM Thread Starter
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Alright! Thanks guys. I keep hearing about it but have no idea what it is: what is the ICP?



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes *Wrecked 5/16


1999 F250 XLT ECSB 2wd Auto. Hydra chip, gauges, 6637, Army OD Green on stock rims...
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post #5 of 11 Old 01-29-2013, 12:30 PM
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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

Elmo/Shane

96 F350 4x4
Everything.
And its expensive.

476,000 Miles


"100% worked for, 100% paid for"
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post #6 of 11 Old 01-29-2013, 12:43 PM Thread Starter
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That o-ring is called the ICP?



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes *Wrecked 5/16


1999 F250 XLT ECSB 2wd Auto. Hydra chip, gauges, 6637, Army OD Green on stock rims...
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post #7 of 11 Old 01-29-2013, 12:56 PM
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No, the ICP sensor has an o ring on it

Elmo/Shane

96 F350 4x4
Everything.
And its expensive.

476,000 Miles


"100% worked for, 100% paid for"
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post #8 of 11 Old 01-29-2013, 12:59 PM Thread Starter
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Gotcha! Ok, thanks!



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes *Wrecked 5/16


1999 F250 XLT ECSB 2wd Auto. Hydra chip, gauges, 6637, Army OD Green on stock rims...
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post #9 of 11 Old 01-29-2013, 06:38 PM
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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!

1997 F250 SC 4x4, E4OD, 4.10 LS, Basically Stock, Relocated Block Heater Plug, External Trans Filter, Tru-Cool Max, I/C Mounted but not Plumbed

SOLD - 1994 F350 CC DRW 2WD PSD, 5 Speed, 4.10 LS, SBC Con-O, Baldwin Filter, Tymar HPX Hose, DPPI DP, Bilsteins, $12 AIC, Coolant Filter, Explorer Overhead Console, A-Pillar w/ISSPRO Black Ice, EV Boost, and EV Pyro, Modified Pedestal, Gutted EBPV.
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post #10 of 11 Old 01-29-2013, 08:21 PM Thread Starter
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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!



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes *Wrecked 5/16


1999 F250 XLT ECSB 2wd Auto. Hydra chip, gauges, 6637, Army OD Green on stock rims...
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