For the last 2 months I've been looking for an oil leak....thought it was the turbo pedestals, removed turbo & replaced o-rings. Today I pulled the car to the track (about 65 miles one way) and I knew it leaked oil....but once at the track, I checked oil and had to add 4 quarts. Drove home, checked oil again, another 4 quarts low. It appears that the leak is at the front of the engine...I assume at/near the HPOP. I cleaned it best I could with some brake cleaner and an air hose and then drove the truck around a little bit. Came back and noticed oil all over underneath the HPOP. BUT I can't see anywhere on the pump itself that is leaking. Looks like more oil near the drivers side of the truck than the passenger side. In fact there is oil running down the driver's side head and of course down the block, to the frame, and all over everything else. Also a TON of oil in the valley, runs back down the bellhousing and then under the truck, all over the front of my trailer as well.

Now...I assume I'll have to pull the HPOP. What's the best option? Replace it? New O-rings, seals, gaskets? I hate working on this thing (SOB is tough to work on) so I don't have to do it but ONCE. I know about the fuel lines...should replace those as well I guess while the fuel bowl is out.

Also...one more question..what symptoms does a failing HPOP exhibit?

 

My guess would be one of the high pressure oil lines off the HPOP to the heads. Good Luck, I hate oil leaks!

 

clean off the hoses coming off the hpop going to the head mine were leaking from the upper hoses bad like that right at the fitting going into the pump, got a $8 set of o-rings and the vally is now dry as can be, i could see a pretty steady drip droping on the the ipr at idle

 

Clean everything off again. After that, run it for a little bit, just to get the leaking going. Then, post pictures of potential sources of the leak here, and in general. Pictures are worth a thousand words. Use a camera with flash for those dark places.

 

Could be the plug in the bottom of the hpop

 

anyone have a link or PN for the O Rings and gaskets needed for HPOP Reinstall to include Fuel Bowl. Figure while everything is out may as well check the turbo Pedestal and R&R those O Rings too. Any thoughts on this?

 

Replacement O-rings for Ford Diesel Engines

I don't see the turbo pedestal orings listed, email bob and I would think he would have them. I got all mine from partsguyed.com when I did mine, now just got some more for spares and the fuel bowl kit from bob.

 

Thanks Darin... Got it saved to my Favorites now.

 

Yes mine also was leaking right at the fitting going into the pump, I change the o-ring there and stop the massive leak, but after some time it leaked again and I retorqued the fitting in the union with the hose and seems that not any more leak. I thought it could be the non-serviceable plug under the pump or the IPR but, luckyly (because I havent to pull the HPOP), with what I did, seems not to be more oil leak, I have to wait more time, but my truck is not my DD.

 

Well I pulled the HPOP off. Oil all over the bottom fitting-and it was loose. Replaced all O-rings including the ones behind the hpop line fittings. Reinstalled, filled reservoir. Truck will NOT start. I've been screwing with it for 3 days now and it won't hit at all. All it does is crank over with the starter. Have fuel at the bowl (full) but when I crack the hpop lines loose, there is just a little tiny dribble and that's about it. Apparently not enough pressure to fire the injectors. What gives? Where did I screw up?

 

Did you possible forget to plug in the ipr? Or possibly bump it when installing the fuel bowl? Just a couple quick guesses. Resevoir staying full I assume?

 

So did you pull the bottom fitting (the "non-serviceable" part) and change the o-ring? Did you install the plastic ball there?

Look and read page 2 here:
http://www.dieselorings.com/docs/service_plug.pdf

Good luck

 

Come to think of it, no. I don't remember seeing the ball or filter come out. However, I found a ball and a little metal thing that looks like the one in the pictures in that link. I found it on the table I was working at-thought it was out of a C4 transmission that my father had built immediately after I had the HPOP off and apart. Not sure what he did with them.

Next issue...I am not sure where the edge filter and ball are at. If for some reason I can't find them-are those two items available or are they included in a new HPOP?

What amazes me is that EVERY other website I've looked at for the last 3-4 days doesn't even say a THING about that edge filter or ball. I guess noone ever thinks about it?

 

I don't know if it will start without the edge filter or ball but maybe the system just needs to bleed out. If that's the case it needs to be cranked over alot.

Your on the best site to answer your question!

 

Oh it's been cranked over. A LOT. Have run the batteries down 4-5 times (lost count). Not even a smell of fuel from the tailpipe and no fuel smoke. There is oil in the head (removed plug tonight) and it circulates but I can hold my finger over the hole while cranking and there doesn't seem to be a whole lot of volume or pressure. I even left the plugs out of each head to verify that no air is in the rails-and I saw no air bubbles at all.