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2001 7.3 High Pop Empty

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Old May 1, 2025 | 01:57 AM
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Originally Posted by udsuth78
So swash plate pumps don't just quit work very often, and when they do it usually happens catastrophically. Like itinsides become outsides kind of catastrophic. Solenoid valves seldom fail either. The magnetic coil can burn out but even that typically will show signs before just quitting. What can and does fail with little or no warning is wiring and electrical connections. The IPR connector and pigtail are a known trouble spot, and a can fool the passing glance. The wires can actually turn to goo inside the loom. Between age, countless heat cycles, oil/diesel, and the current passing through the wire the insulation can just turn to jelly. The loom has to be removed and stripped back 6-8 inches or so to inspect the wiring for any signs of damage. There is also the possibility of air lock like I mentioned earlier. It wouldn't explain the truck dying on you but it would explain a no start now. As far as the truck dying have we nailed down why the reservoir was empty?
Makes a lot of sense. Thinking I need to go through the entire harness and replace pigtails if needed. I will check ipr and icp connectivity tomorrow. As far a reservoir I think it’s a non issue moving forward, has been full and staying fill this week. I might have assumed res was empty without actually physically testing level thoroughly but oil level in pan was below hash mark
on dipstick.
 
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Old May 1, 2025 | 04:10 PM
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Update.
pulled icp and covered opening with rags, cranked motor for 10 seconds and zero oil flowed out.
 
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Old May 1, 2025 | 04:18 PM
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Was there oil in the rails when you took icp sensor out. If they were empty from when reservoir was draining it can't take some extending cranking to fill them. They hold a gold bit of oil.
 
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Old May 1, 2025 | 05:47 PM
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No oil when i pulled icp at all. Spun engine for 2 rounds of 15 seconds, bone dry.

Pulled reservoir off did not see anything weird except small pieces of metal in reservoir backet. See pic.











 
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Old May 1, 2025 | 11:29 PM
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Update
Checked debris in reservoir basket with magnet and all appears to be aluminum.
 
Last edited by robjs111; May 1, 2025 at 11:30 PM. Reason: spelling
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Old May 2, 2025 | 12:48 AM
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What's going on here? I can't really make out the condition of the gasket for all the oil. If it was going to drain back to the pan that's the most likely spot.


 
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Old May 2, 2025 | 01:08 AM
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Originally Posted by udsuth78
What's going on here? I can't really make out the condition of the gasket for all the oil. If it was going to drain back to the pan that's the most likely spot.

Not sure what your question is. The larger hole if feed from lpop and the smaller is a return drain, much smaller but above your red circle to right. The other is a small dimple in metal section of gasket.
 
Last edited by robjs111; May 2, 2025 at 01:12 AM. Reason: correct
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Old May 2, 2025 | 01:19 AM
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Originally Posted by Tpayne621
Was there oil in the rails when you took icp sensor out. If they were empty from when reservoir was draining it can't take some extending cranking to fill them. They hold a gold bit of oil.
Cranked motor for 2 rounds of 15 secs, no oil at all.
 
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Old May 2, 2025 | 09:57 AM
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From: Ponca City, OK
Originally Posted by robjs111
Not sure what your question is. The larger hole if feed from lpop and the smaller is a return drain, much smaller but above your red circle to right. The other is a small dimple in metal section of gasket.
I was just wondering if there were any questionable spots in the gasket or mating surfaces in that area since it is the most likely place to develop a leak back to the pan.
 
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Old May 2, 2025 | 01:32 PM
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Originally Posted by robjs111
Any method to actually test hpop to confirm aside from check bolt on gear?
Was the gear bolt ever checked?
 
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Old May 2, 2025 | 01:45 PM
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Originally Posted by 4xfourdoorFloyd
Was the gear bolt ever checked?
Gear bolt is good to go, no issues.

 
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Old May 2, 2025 | 01:48 PM
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Looking like a issue with the ipr valve or a bad hpop.
 
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Old May 2, 2025 | 01:49 PM
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From: Bahstun
That is some weird looking oil
Is there water in it or something else?
 
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Old May 2, 2025 | 02:02 PM
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Oil is royal purple but truck doe not see much action of late so that could be a factor.
What do you think about oil?

Should oil be flowing out of icp opening when motor is turned over?

 
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Old May 2, 2025 | 02:04 PM
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Originally Posted by knottyrope
That is some weird looking oil
Is there water in it or something else?
Not that I’m aware of, do you notice something with oil besides color?

thanks
 
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