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Won't crank. Had it towed to local mechanic who does a lot of work on diesels and comes recommended. He says HPOP is bad, only putting out ~250lbs of pressure. He pulled the pump. No metal in screen or anything else to indicate there is another problem (like lifter failure). He recommends putting on a new and not a reman pump. He said he's had good luck with a carquest pump.
What pump do I need? Is there an upgraded pump? While I'm in there I want to put on what will last.
Anything else that should be done while it's torn apart?
Those pumps rarely fail! The STC fitting fails more often, but that would show very low pressure if it failed. My guess is dummy plugs or the stand pipes and since he's real good... did he perform an air test to determine the exact location or that is was actually the pump?
Pump is $1000 or pipes and plugs $125, I know what I'd be asking for... a new mechanic! Air test should have been the first thing he did and he should have known the Snap-to-Connect fitting is a known issue with 05-07 model year trucks. Make sure that's replaced.
That's it, but I'm with WatsonR. It's rare for an 05 - 07 pump to go out. The items at the bottom of that page is more than likely what you need. 2 of each. Possibly the STC fitting on the back of pump needs upgrading. Good luck
I'm with Watson, you obviously found a mechanic that doesn't know the 6.0l. I would ask him how he arrived at the conclusion that the HPOP is bad? As previously mentioned the dummy plugs, standpipes and or STC fittings are the most common HPO components to fail. There is a really good chance you could install a new HPOP only to find you still have the original problem. And there is no way I would go with anything other than an OEM reman on an 05 and newer HPOP. Just out of curiosity, is this an F series truck or an excursion we are talking about? Nm I see its an F-250.
Well in that case, if in fact the pump is the culprit then he will gladly pay for anything NOT quoted initially......like a STC, plugs and standpipes, if that is what it takes to actually fix it.
Best of luck
Just curious, but is this reputable diesel mechanic familiar with the 6.0? All these guys here have seen so many more posts and threads than I have. From everything they and I have seen it is RARE that these HPOP's go bad. Take the questions and suggested failure points to this mechanic and ask him if he has done an air test, ruling out the STC fitting, standpipes and dummy plugs. Otherwise, you could be buying a pump for no reason. The guys that have posted here DO know what they are talking about.
So the engine is cranking, just not starting. What is the ICP and IPR % numbers? If your mechanic didn't check those and can't give them to you I would at the very least insist that he also replaces the STC fitting and a signed document that if that is not the problem he will fix anything else at NO charge to you. Sounds to me as well as other posters that he is not very familiar with the 6.0.
I would ask him if the stc fitting came off easily or crumbled when he removed the pump. Also have him check the rear cover just behind the fitting for any marks or cracks.
If there is a crack or mark where the stc fitting is then almost certainly the pump is fine.
If the stc fitting is able to be pulled off the pump easily then the pump is likely fine.
I would have him do stc fitting and stand pipes and dummy plugs and then put it back together without the turbo and do a proper air check.
Assuming that passes you can crank it without the FICM and with the glow plug module unplugged and see if you get 500+ psi. if so, finish putting it back together and you are good to go.
Richard
EDT also, where are you... there might be locals who can help
I'm in Quitman, Georgia. Would be great if there was someone close who knows the 6.0.
No problem. The 03-04.5 had HPOP issues but I I cannot think of a time I have heard someone have a bad 05+ hpop... I am sure it has happened but I have not heard of it (not that I have been in the 6.0 side long).
And since he has replaced the pump... YOU WANT the old pump back! Anthony at Super Duty Service replaces 03-04 pumps with these as an upgrade. Yes, he puts used pumps from 05-07 trucks in and even warranties them against failures...
OP,
You're seeing a lot of talk about STC fitting. The fitting is on the HPOP. A new pump should come with the updated replacement of the STC fitting. If you had a blown STC and he throws a pump in it and fixes it, it's quite possible the pump was fine and the fitting is all that was bad.
Here's is a picture of an original STC (LEFT) and the updated fitting (RIGHT). Ask the mechanic to show you the old one. If it is in two pieces or really loose then THAT was the problem more than likely than a bad pump. You can purchase the new fitting for FAR less but regardless the pump has to come out to replace it.
They commonly leak around the seal due to a failed internal oring.
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