Is this a GPR Problem
Logistics Pro
Joined: Mar 2007
Posts: 4,587
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From: knoxville, tn
The easiest way to mechanically check the oil pressure is to remove one of the oil rail plugs on the heads. You can screw in a gauge right there or screw a hydraulic line in with a gauge. Just use appropriately rated hose and fittings.
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Trailering
Joined: Jun 2018
Posts: 19
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From: Spokane, WA
Here is a long delayed update to my saga.
Lacking the means to test the HPOP, I took it to a local shop and they confirmed that it was in fact a bad HPOP - as well as a few other things.
- Need a new HPOP
- Replace the IPR, as most likely damaged when the pump failed
- Up-pipes are leaking, so repair those
- Intake manifolds also leaking, those would be re-sealed
$2856 total with labor for all of the above. The engine has 340k miles on it and otherwise seemed to be running well. I put a rebuilt transmission in it two years ago. So $3k seems like the cheapest way to keep having a truck at my disposal.
Are any of the jobs listed above easy enough for an amateur mechanic to tackle? $780 of the total is labor, but I've never done any of those repairs before. Any reason not to keep putting money in this rig to keep it alive for another 100k miles?
Harley
Lacking the means to test the HPOP, I took it to a local shop and they confirmed that it was in fact a bad HPOP - as well as a few other things.
- Need a new HPOP
- Replace the IPR, as most likely damaged when the pump failed
- Up-pipes are leaking, so repair those
- Intake manifolds also leaking, those would be re-sealed
$2856 total with labor for all of the above. The engine has 340k miles on it and otherwise seemed to be running well. I put a rebuilt transmission in it two years ago. So $3k seems like the cheapest way to keep having a truck at my disposal.
Are any of the jobs listed above easy enough for an amateur mechanic to tackle? $780 of the total is labor, but I've never done any of those repairs before. Any reason not to keep putting money in this rig to keep it alive for another 100k miles?
Harley
Tuned
Joined: Apr 2018
Posts: 329
Likes: 17
This link jumps into the middle of my No Start thread. It shows how to test the HPOP conclusively.
https://www.ford-trucks.com/forums/1...l#post17927876
When mine wouldn't start and I was reading old threads I got the feeling most HPOPs were replaced by guess and by golly. I couldn't find another conclusive HPOP test.
Did the shop tell you how they tested the HPOP? I think most of them guess by partial process of elimination.
The HPOP can go bad easily. All it takes is a sticking relief valve.
https://www.ford-trucks.com/forums/1...l#post17927876
When mine wouldn't start and I was reading old threads I got the feeling most HPOPs were replaced by guess and by golly. I couldn't find another conclusive HPOP test.
Did the shop tell you how they tested the HPOP? I think most of them guess by partial process of elimination.
The HPOP can go bad easily. All it takes is a sticking relief valve.
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Wiredoge4
1999 - 2003 7.3L Power Stroke Diesel
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Dec 23, 2009 02:39 PM
