How much oil leaks out of HPOP and Turbo Pedestal O-rings? - Diesel Forum - TheDieselStop.com
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99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

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Old 09-18-2006, 09:08 PM   #1 (permalink)
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How much oil leaks out of HPOP and Turbo Pedestal O-rings?

So today I back out of the driveway and find a puddle of oil (about 6"x18") on it. Pull back in, and look underneath. It's coming out of the small hole in the TC Cover. Found the recent post that references this type of leak. Everyone seemed to think it was the HPOP or Turbo pedestal o-rings. Drove it ten miles and came back to another spot with substantial size.

I just bought this truck about 6k ago. First time towing a heavy load was this past weekend (carhauler/rockcrawler ~7k).

The valley has oil in it, but i'm not sure how old it is because it's pretty cruddy in there.

How much do these parts cost? Are there any good writeups to changing the O-rings? Would I want to do this myself or have the dealer do it. It's my first diesel and while I'm mechanically inclined (built a rockcrawler) I have no knowledge whatsoever of diesels.

Would this much oil leaking still be from the HPOP and Turbo Ped.?

Thanks in advance,
Christian
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Old 09-18-2006, 09:44 PM   #2 (permalink)
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Re: How much oil leaks out of HPOP and Turbo Pedestal O-rings?

First things first is it tranny fluid or engine oil?
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Old 09-18-2006, 09:54 PM   #3 (permalink)
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Re: How much oil leaks out of HPOP and Turbo Pedestal O-rings?

I had a '99 PSD that did the same thing. It was, I think an 11/16, plug with a o-ring on the back of the hpop to the left of the fuel filter housing. At idle you couldn't see much, but at high idle you could see it dripping.
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Old 09-18-2006, 10:09 PM   #4 (permalink)
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Re: How much oil leaks out of HPOP and Turbo Pedestal O-rings?

Definately Engine Oil. I just looked at what i think is the HPOP. Where does it usually leak out of? There's the big plug on the pass side under the fuel filter housing, and the two inlet/outlet plugs on the driver side. Are there the usual spots? The "crud" seems to start from the HPOP but the HPOP is pretty clean. I was really hoping that was it, but it looks as if it may be the Turbo Pedestal.

Is the turbo pedestal found right at the "y" of the intercooler? I don't really know much about turbos. This is my first diesel also.
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Old 09-18-2006, 10:23 PM   #5 (permalink)
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Re: How much oil leaks out of HPOP and Turbo Pedestal O-rings?

look for where your engine is the cleanest... I'll put my money on that is where the oil is coming from [img]/ubbthreads/images/graemlins/wink.gif[/img]

my two massive oil leaks so far:
-o-rings on the ebpv rod coming out of the pedestal (pedestal is the bracket the turbo sits on)
-o-ring on the 11/16" plug on the back of the hpop (under plastic powerstroke chingadero at front of motor)

both these leaks lost about 2 gallons, yes 2 gallons! in a short period of time! the hpop leak happend on the freeway and lost enough oil that my injectors stopped working...

there are two o-rings that seal the turbo pedestal to the turbo housing, there are o-rings in the lines coming out of the hpop and going to the injector rails on the heads.

check your oil level and get up close and friendly with everything up in the valley with the motor running and see if you can see anything leaking... let it idle or have someone rev it up a bit for you... don't forget your safety glasses [img]/ubbthreads/images/graemlins/smile.gif[/img]
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Old 09-18-2006, 10:26 PM   #6 (permalink)
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Re: How much oil leaks out of HPOP and Turbo Pedestal O-rings?

Get a flashlight you will need it day or night and stand just off to the side of the front passenger headlight. Point the flashlight to the passenger side of the turbo pedestal center back of engine. What you are looking for is an actuating rod that comes out the side of your pedestal to the ebpv. That rods packing will some times fail and you will have oil leak out.
You are looking for oil not dried misted oil, which is normal for these trucks. Also around the bottom or top of the pedestal for the signs of a failed pedestal o-ring.

Jim
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Old 09-18-2006, 11:02 PM   #7 (permalink)
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Re: How much oil leaks out of HPOP and Turbo Pedestal O-rings?

[ QUOTE ]
Definately Engine Oil. I just looked at what i think is the HPOP. Where does it usually leak out of? There's the big plug on the pass side under the fuel filter housing, <font color="red"> Don't remove that one - it's the spring loaded relief valve </font> and the two inlet/outlet plugs on the driver side. Are there the usual spots? The "crud" seems to start from the HPOP but the HPOP is pretty clean. I was really hoping that was it, but it looks as if it may be the Turbo Pedestal.

Is the turbo pedestal found right at the "y" of the intercooler? I don't really know much about turbos. This is my first diesel also.

[/ QUOTE ]

The third plug you're looking for on the HPOP, besides the two hose connections on the driver's side is on the BACK of the HPOP below the fuel filter housing alongside the big round plug. It's a hex plug with an o-ring seal.

Here's some part #'s for you if you want to tackle it.

KIT SE PMP HYD (HPOP O-rings fitting repair kit w/sealant) Includes Loctite 680
Ford 2C3Z-9G804-AB
Int'l 1843716C92

1815560C1 Turbo to pedestal O-ring .421 x .560
1815561C1 Turbo to pedestal O-ring .769 x .908
It will take 2 of each of these. One set between the pedestal and block, and another between the pedestal and turbo.
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Old 09-19-2006, 08:51 AM   #8 (permalink)
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Re: How much oil leaks out of HPOP and Turbo Pedestal O-rings?

Does anyone have a write-up for swapping the turbo pedestal orings?
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Old 09-19-2006, 10:47 AM   #9 (permalink)
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Re: How much oil leaks out of HPOP and Turbo Pedestal O-rings?

I am chasing the same problem, oil in the valley. I thought it was the IPR,, cleaned everything out of valley,, (Rags and smaller hands, Some of you guys couldnt get your hand into the valley behind the fuel housing I am sure)
I had oil running down the length of the IPR and changed it out,, now a week later, more oil. [img]/ubbthreads/images/graemlins/phoney.gif[/img] So, I am wiping it all out again, going to check those plugs Kevin mentioned.

I would wipe everything out first, if it IS the turbo pedistal, you will see the oil there first obviously. If it comes from the front to the rear of the motor in the valley,,then it is HPOP area related of course.

The turbo pedistal is not hard to remove really, Just a bit difficult to reach if your bigger. You have to basicly lay across the motor and reach under the cowl. First remove all the turbo pipes,,,The Down pipe and UP pipe collector will be the hardest to do. If it hangs up after loosening the clamp, then take a long drift punch and LIGHTLY tap with a hammer thru the turbo,,(Between the housings you can see the collector) from the right front corner of engine. The EBV has a small clip,, (CAREFULL not to loose it)
After everything is off the turbo, there are two bolts between the housings, these hold the turbo to the pedistal, then the 4 bolts that hold the pedistal are acessable. The "O" rings are below and ABOVE the pedistal, between the engine and pedistal, and pedistal and turbo.
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Old 09-19-2006, 10:55 AM   #10 (permalink)
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Re: How much oil leaks out of HPOP and Turbo Pedestal O-rings?

I just went through the same problem with my 01 F-350. It turned out to be the o-ring on the HPOP oil line that feeds the left bank. It will dump oil at an astonishing rate at highway RPM.
Note: If this is where your leak is, do yourself a favor and get the special tool (outlined by the Ford O-ring installation instructions) used to remove the oil lines from the fittings. I didn't and my neighbors are probably still trying to clear the expletives from their ears.
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Old 09-19-2006, 05:55 PM   #11 (permalink)
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Re: How much oil leaks out of HPOP and Turbo Pedestal O-rings?

When my HPOP started leaking it went totally within a day. That morning just a small puddle on the ground. By lunch a substantial puddle. Went to get the o-rings from Ford and barely got it home with what oil I had left.

With the engine idling I could see the oil dripping/leaking past the HPOP o-rings and fitting. I went to a Cat dealer and picked up the hydraulic hose quick disconnect for &lt;$20. It was great. I don't remember the p/n. Sorry.

My bet is the HPOP o-rings. O-ring kit from Ford &lt;$20, tool from Cat &lt;$20.

Good luck,
JF
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Old 09-19-2006, 06:17 PM   #12 (permalink)
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Re: How much oil leaks out of HPOP and Turbo Pedestal O-rings?

[ QUOTE ]
Does anyone have a write-up for swapping the turbo pedestal orings?

[/ QUOTE ]

I already sent this to CGuava via PM at his request, figured I'd post it here for anyone else interested.

http://thefourwheelerpage.com/diesel...l_o_rings.html

[img]/ubbthreads/images/graemlins/smile.gif[/img]
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