High Pressure Oil Pump
Thread Starter
|
New User
Joined: Jun 2003
Posts: 23
Likes: 0
From: Mitchell, Indiana
High Pressure Oil Pump
I have a bad O-Ring in my HPOP and the person the owned it before me put a remanufactured one on. (why, I dont know when it was under warrenty?
) I had asked about this before but what does the plug at the bottom do? It has a small long shank that goes inward and has a o-ring around it. The o-ring was bad and the plug is striped out and has took 20,000 mile to start leaking. I would like to retap the casting and put just a regular plug in but does it serve a purpose? I thought I had it tight enough to get me by until I had more time and money but when I started it up it blew the plug out and its gone. 
I have the pump out now and need to get it fixed. What would you advise? Thanks for all your help, before and now.
99 F-250 powerstroke, 4x4. "with problems"
) I had asked about this before but what does the plug at the bottom do? It has a small long shank that goes inward and has a o-ring around it. The o-ring was bad and the plug is striped out and has took 20,000 mile to start leaking. I would like to retap the casting and put just a regular plug in but does it serve a purpose? I thought I had it tight enough to get me by until I had more time and money but when I started it up it blew the plug out and its gone. I have the pump out now and need to get it fixed. What would you advise? Thanks for all your help, before and now.99 F-250 powerstroke, 4x4. "with problems"
Posting Guru
Joined: Feb 2001
Posts: 1,465
Likes: 2
From: Indianapolis
High Pressure Oil Pump
I believe the plug you are refering to is for the high pressure dump passage. If the pump or IPR malfunctions causing all the oil to be directed to the rails, this passage dumps the pressure manually at about 3800 PSI (I'll look at the service manual to see if that is right). I don't know what would happen if you just plugged it. I don't know if you can drill it and tap it without getting crap into the pump (it probably won't hurt the pump but it will trash your injectors if the pump pumps it into the H/P rails. Can you find a new or rebuilt pump somewhere?
Thread Starter
|
New User
Joined: Jun 2003
Posts: 23
Likes: 0
From: Mitchell, Indiana
High Pressure Oil Pump
I'm just trying to find the cheapest way out. I more scared of what it will do by putting a regular bolt, setscrew in than getting chips in the pump. I can’t understand what the shank is for? I can see why the passage is there (to connect the passage for oil to get to a sensor) but why it needs a shank. Thanks
Thread Starter
|
New User
Joined: Jun 2003
Posts: 23
Likes: 0
From: Mitchell, Indiana
High Pressure Oil Pump
I found the problem and it is a passage port to get oil to the IPR. It is a metric bolt with a shank on the end, behind that is a square looking thing that has oblong ends, right beside that is a small plastic ball. The ball is to seal the small bleed hole in front of the pump. If you had the pump off (the hard way of finding out) and looked on the opposite side of the pump as the IPR there is a small hole going back into the? block? I think? I do know there’s a small hole. I've been told the ball is to keep some pressure in the block to help on the next start so you don’t have to wait for pressure to build up? I think I've talked to every expert in southern Indiana today. I found parts we use to make for a ZTR mower and machined the port again and seems to be working fine. For some reason it doesn’t seem to start as quick as it use to. I'm not a mechanic so it may be something I did wrong but no leak. Thank you everybody for all the advice. Hope I can return the favor
