Air Testing HPO System
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Logistics Pro
Joined: Feb 2004
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From: The Land Of Time
Air Testing HPO System
Hey Guys,
Ive got a stubborn 05 with a HPO system leak when hot. It has an updated STC fitting which I verified by actually looking as the customer couldn't produce any service records from the dealer.
I was trying to air test the system to find the leak, but Im not sure where to test and how much pressure to use. I was actually planning on using my EVAP leak tester and introducing smoke from the machine so I can actually see the leak and not just hear it.
Thanks for the help.
Sarge
Ive got a stubborn 05 with a HPO system leak when hot. It has an updated STC fitting which I verified by actually looking as the customer couldn't produce any service records from the dealer.
I was trying to air test the system to find the leak, but Im not sure where to test and how much pressure to use. I was actually planning on using my EVAP leak tester and introducing smoke from the machine so I can actually see the leak and not just hear it.
Thanks for the help.
Sarge
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Need an adaptor to thread into the ICP sensor port. M12X1.5 with o-ring
As much compressor air as you can. The system is designed for 4000+ psi, 100-150 psi shop air won't hurt anything.
Key on, engine off to energize the injector coils.
On the middle PCM connector you will jump PIN 2 to ground to close the IPR.
Josh
As much compressor air as you can. The system is designed for 4000+ psi, 100-150 psi shop air won't hurt anything.
Key on, engine off to energize the injector coils.
On the middle PCM connector you will jump PIN 2 to ground to close the IPR.
Josh
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Joined: Mar 2014
Posts: 166
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From: Fort Worth, Tx
Need an adaptor to thread into the ICP sensor port. M12X1.5 with o-ring
As much compressor air as you can. The system is designed for 4000+ psi, 100-150 psi shop air won't hurt anything.
Key on, engine off to energize the injector coils.
On the middle PCM connector you will jump PIN 2 to ground to close the IPR.
Josh
As much compressor air as you can. The system is designed for 4000+ psi, 100-150 psi shop air won't hurt anything.
Key on, engine off to energize the injector coils.
On the middle PCM connector you will jump PIN 2 to ground to close the IPR.
Josh
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Energize about 60-90 seconds at a time.
Josh
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Joined: Mar 2014
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From: Fort Worth, Tx
So it's just the same as adding 12 volts to the ipr.. thanks man..
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Logistics Pro
Joined: Feb 2004
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From: The Land Of Time
So in theory if the IPR is commanded at 0% I assume that means its closed or is my assumption wrong.
The reason I ask is the leak at the passenger side valve cover is so bad that I cant tell a difference when I command it from 0% to 90%, Im in the process of pulling the valve cover now, I will repressurize it when I get it torn town.
I will also post pictures of the hose I made to air check the system.
Thanks,
Sarge
The reason I ask is the leak at the passenger side valve cover is so bad that I cant tell a difference when I command it from 0% to 90%, Im in the process of pulling the valve cover now, I will repressurize it when I get it torn town.
I will also post pictures of the hose I made to air check the system.
Thanks,
Sarge
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Tuned
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14% is open (dumping oil) and 85% is closed (sending all oil to the injectors...or air in this case).
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Energizing the IPR keeps the air in the oil rails instead of bleeding into the crankcase and HPOP. Think of the IPR like a dam holding back the air.
If you have a leak under the valve cover no matter the IPR position then you have a leak under the valve cover.
Culprit
Dummy plugs
Oil nipple o rings
Standpipes
Upper injector o ring
Josh
If you have a leak under the valve cover no matter the IPR position then you have a leak under the valve cover.
Culprit
Dummy plugs
Oil nipple o rings
Standpipes
Upper injector o ring
Josh
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Logistics Pro
Joined: Feb 2004
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From: The Land Of Time
Looks like the O-ring at the top of the injector is beat up and wrinkled. The only question I have is how loose should the fittings in the HPO rail be. They seem a little loose to me but Im not sure how loose they should or shouldn't be.
The fittings Im talking about are the oil supply fittings that would seal against the upper injector O-rings.
Thanks,
Sarge
The fittings Im talking about are the oil supply fittings that would seal against the upper injector O-rings.
Thanks,
Sarge
Senior User
Joined: Mar 2014
Posts: 166
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From: Fort Worth, Tx
Looks like the O-ring at the top of the injector is beat up and wrinkled. The only question I have is how loose should the fittings in the HPO rail be. They seem a little loose to me but Im not sure how loose they should or shouldn't be.
The fittings Im talking about are the oil supply fittings that would seal against the upper injector O-rings.
Thanks,
Sarge
The fittings Im talking about are the oil supply fittings that would seal against the upper injector O-rings.
Thanks,
Sarge
Thread Starter
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Logistics Pro
Joined: Feb 2004
Posts: 4,460
Likes: 14
From: The Land Of Time
The O-ring at the top of the injector is defiantly bad, but I was wondering about the nipples in the HPO Rail. I did buy the seals and the tool to replace them anyway so I will see how they are. Im assuming with 144k on the clock it cant hurt to replace them while its apart.
I keep O-ring kits on hand for the injectors, just didn't realize the nipple O-rings were serviceable until I looked at RiffRaffs site and saw the tool and 4 orings.
Sarge
I keep O-ring kits on hand for the injectors, just didn't realize the nipple O-rings were serviceable until I looked at RiffRaffs site and saw the tool and 4 orings.
Sarge
Fleet Owner
Joined: Apr 2012
Posts: 27,307
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From: Spanaway
Here are some good links on that topic.
https://www.ford-trucks.com/forums/1...ole-story.html
https://www.ford-trucks.com/forums/1...o-creator.html
Sean
https://www.ford-trucks.com/forums/1...ole-story.html
https://www.ford-trucks.com/forums/1...o-creator.html
Sean
Senior User
Joined: Mar 2014
Posts: 166
Likes: 0
From: Fort Worth, Tx
The O-ring at the top of the injector is defiantly bad, but I was wondering about the nipples in the HPO Rail. I did buy the seals and the tool to replace them anyway so I will see how they are. Im assuming with 144k on the clock it cant hurt to replace them while its apart.
I keep O-ring kits on hand for the injectors, just didn't realize the nipple O-rings were serviceable until I looked at RiffRaffs site and saw the tool and 4 orings.
Sarge
I keep O-ring kits on hand for the injectors, just didn't realize the nipple O-rings were serviceable until I looked at RiffRaffs site and saw the tool and 4 orings.
Sarge
if you have an impact or access to one it will be much easier to get them loose off the rail..