Leaking HPOP
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More Turbo
Joined: Dec 2009
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Leaking HPOP
My truck has been leaving it's mark in my driveway for a while now.
Big trip coming up in 6 weeks. So I started to clean and dig, found out the HPOP is leaking against the engine. Pretty sure it's the gasket against the block that is leaking. Question is , should I rebuild the entire pump while it's out ? And what else should be done while I have the pump out ? I plan on buying the parts at dieselorings.com
Truck is an excursion 7.3 with 149,000 miles on it
Thanks for any tips
Big trip coming up in 6 weeks. So I started to clean and dig, found out the HPOP is leaking against the engine. Pretty sure it's the gasket against the block that is leaking. Question is , should I rebuild the entire pump while it's out ? And what else should be done while I have the pump out ? I plan on buying the parts at dieselorings.com
Truck is an excursion 7.3 with 149,000 miles on it
Thanks for any tips
Senior User
Joined: Aug 2011
Posts: 301
Likes: 1
My truck has been leaving it's mark in my driveway for a while now.
Big trip coming up in 6 weeks. So I started to clean and dig, found out the HPOP is leaking against the engine. Pretty sure it's the gasket against the block that is leaking. Question is , should I rebuild the entire pump while it's out ? And what else should be done while I have the pump out ? I plan on buying the parts at dieselorings.com
Truck is an excursion 7.3 with 149,000 miles on it
Thanks for any tips
Big trip coming up in 6 weeks. So I started to clean and dig, found out the HPOP is leaking against the engine. Pretty sure it's the gasket against the block that is leaking. Question is , should I rebuild the entire pump while it's out ? And what else should be done while I have the pump out ? I plan on buying the parts at dieselorings.com
Truck is an excursion 7.3 with 149,000 miles on it
Thanks for any tips
)
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
Backing up the bus a bit... the EBP sensor is on a plate in front of the HPOP. If you turn a wrench on this without a wrench on the other side to counter the force, you will bend the plate. The plate does not have an O-ring, it is RTV'd in place - I'd first double-check to make sure this isn't your culprit.
[INSTRUCTIONS]
[INSTRUCTIONS]
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More Turbo
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Tugly, thanks for the idea, but I am a little confused, saw your link and still don't follow.
I can feel under the pump and where it's leaking at it's end !
Are you saying there is a plate its mounted on or ?
Thanks for your help
Kyle
I can feel under the pump and where it's leaking at it's end !
Are you saying there is a plate its mounted on or ?
Thanks for your help
Kyle
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Joined: May 2008
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Nope, the plate he's referring to is in front of the HPOP reservoir and slightly below it. Its a plate with an attached bracket that is supports the EBP sensor, with the EBP tube running below it down the front of the engine.
X2 on rebuilding the entire HPOP while you've got it off. Unless you've already done it, go ahead and rebuild the fuel bowl too...the entire kit is pretty inexpensive from dieselorings and you're already going to have the whole fuel bowl pulled. It shouldn't take you more than an extra hour of work. And that's some major insurance against future leaks, because all those seals will end up leaking eventually.
X2 on rebuilding the entire HPOP while you've got it off. Unless you've already done it, go ahead and rebuild the fuel bowl too...the entire kit is pretty inexpensive from dieselorings and you're already going to have the whole fuel bowl pulled. It shouldn't take you more than an extra hour of work. And that's some major insurance against future leaks, because all those seals will end up leaking eventually.
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More Turbo
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So Tugly,
I printed and read that link.
What I don't understand , is how that plate could be "the culprit" ?
Thanks
Kyle
I printed and read that link.
What I don't understand , is how that plate could be "the culprit" ?
Thanks
Kyle
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Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
I'm not saying that is your issue, I just mentioned it was worth a look because it covers the HPOP drive - plenty of oil splashing around in there. One member had an oil leak and discovered his was bent out. His fix was to remove it, straighten it, and re-seal it - problem solved.
Sometimes a member will say I have XYZ problem and many of us who have run into the same problem suggest the same cure they used. Issues that pop up like prairie dogs frequently have more than one possible answer, so I just do my thing of offering up the alternative possibilities.
Sometimes a member will say I have XYZ problem and many of us who have run into the same problem suggest the same cure they used. Issues that pop up like prairie dogs frequently have more than one possible answer, so I just do my thing of offering up the alternative possibilities.
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Joined: Jan 2011
Posts: 18,849
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From: Puget Sound
I wouldn't pull it unless you need to pull the HPOP or repair the plate - it's sealed with an adhesive sealant. A light and an inspection camera or mirror will allow you to see the plate more clearly (just forward and below the HPOP reservoir, see figure 7 in the link I posted).