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Major oil leak...what's the diagnosis?

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Old Feb 19, 2023 | 05:30 PM
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Major oil leak...what's the diagnosis?

I drained the the engine oil today to do an oil change and found an oil leak. Oil cascading down onto the starter. Driver's side of engine is dry. I almost pissed myself at first as I though it was the main real seal because oil was dripping down the cover between the trans and motor.

Where the heck is all this oil coming from? I changed the valve cover gaskets and oil lines across the valley some years ago with viton seals. HPFP too.






 
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Old Feb 19, 2023 | 05:56 PM
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Get a little mechanic’s mirror and check your oil rail galley end plugs.

https://www.dieselorings.com/1999-20...der-heads.html
 
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Old Feb 19, 2023 | 06:20 PM
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Can't really discern from your pictures where oil leak originates.
My standard reply is "It's a Ford, if she ain't leaking, she's out of oil!". This applies mostly to trucks that have been "Rode hard and put up wet" like mine. I have been known to work the crap out of my truck when needed!



Of course best to definitely identify source, but if less than 1 quart loss per oil change, no cross contamination of oil, fuel, and/or antifreeze, accept it - she's a Ford!
 
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Old Feb 19, 2023 | 07:11 PM
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Thanks for the link. I'll check those plugs tomorrow.

The description says it's almost impossible to get to them....gulp!
 
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Old Feb 19, 2023 | 07:14 PM
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Originally Posted by Colorado Horseman
Of course best to definitely identify source, but if less than 1 quart loss per oil change, no cross contamination of oil, fuel, and/or antifreeze, accept it - she's a Ford!
...but it's leaking onto the hot up pipe. I don't want a fire.
 
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Old Feb 19, 2023 | 07:39 PM
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The valley has a drain hole that exits on the rear passenger side. Topside leaks look like a main seal but rarely is. Make sure your valley is dry before trying to find things down lower.
 
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Old Feb 19, 2023 | 07:40 PM
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Many 7.3 l diesels leak where the dip stick goes into the 2" nut on the oil pan.

Yes, and as ArmyLifer says, check your valley.

The diesel fuel filter under the vanity panel leaks, and seems like oil, but it is diesel fuel.

So sometimes you need one of the filter kits as follows :

Amazon Amazon
 
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Old Feb 19, 2023 | 08:08 PM
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Occum's Razor suggests the dipstick fitting or the HPOP..
 
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Old Feb 19, 2023 | 08:13 PM
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What does this mean? 2002/2016 "hybrid" F350 XLT 7.3l
What is this?

Looks like some sort of filter. Is this some sort of aftermarket part? Sorry but your images suck!
 
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Old Feb 19, 2023 | 08:37 PM
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It's not the dipstick tube. HPOP is new. Diesel fuel filter housing is all new... Not rebuilt, new.

The photos are me lying under the truck looking up at the up pipes on the passenger side.

This guy has it figured out.

 
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Old Feb 19, 2023 | 08:39 PM
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Originally Posted by Colorado Horseman
What does this mean? 2002/2016 "hybrid" F350 XLT 7.3l
What is this?

Looks like some sort of filter. Is this some sort of aftermarket part? Sorry but your images suck!
No that's the original up pipes and heat shield covered in oil.

The thin wire is the sending unit for the exhaust temp gauges
 
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Old Feb 19, 2023 | 08:40 PM
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Originally Posted by ArmyLifer
The valley has a drain hole that exits on the rear passenger side. Topside leaks look like a main seal but rarely is. Make sure your valley is dry before trying to find things down lower.
I'm gonna climb to there tomorrow and check. Thanks Mr
 
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Old Feb 19, 2023 | 09:20 PM
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Maybe it's the turbo pedestal leaking...

 
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Old Feb 19, 2023 | 09:25 PM
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My deluge was an HPOP oring. I had a minor leak at the turbo pedestal, and at a HPx oring (HPx since removed). HPOP hoses and fittings are also a possibility.
 
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Old Feb 19, 2023 | 09:45 PM
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Originally Posted by ArmyLifer
My deluge was an HPOP oring. I had a minor leak at the turbo pedestal, and at a HPx oring (HPx since removed). HPOP hoses and fittings are also a possibility.
Hoses? I only remember metal lines in the valley when i did the viton o-rings.. hpop, dog house...
 
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