Was in the process of leak testing and managed to get my j-tube to seal. With the cover off and the j-tube bolted in place, I put air through the top of the HPOP and I can feel it coming out of the gear side of the pump. If I reach back and put my finger through the gear hole I can feel the air coming from what feels like the inside of the pump. Is it possible I got a bad pump?

 

Talked to the support folks and they're going to research it, but they suggested continuing with the install and seeing if there's a problem once I get it together. I do NOT want to tear this thing back apart because of something that just doesn't seem right. They also said 100 psi through the top of the HPOP might be too much? These things generate up to 3000 PSI and that doesn't sound right to me.

Bottom line, it seems really off that air would be coming out of the shaft area on the pump when shop air is applied through the top of the j-tube. Am I off in my thinking here?

 

So they want you to put it all back together just to rip it back apart again?

Could one of your branch tubes be cracked?

Wherre did you get the pump from?

100PSI is nothing for these

 

I bought the pump from Thoroughbred. I just called DieselSite directly after talking to TB first. I'm not going to put this together knowing air is coming from the pump. That just doesn't seem right at all. They're supposed to call me back because their tech is out to lunch, so we will see what they say then.

 

How did you apply air to the HPOP? If the IPR was installed was the IPR valve commanded closed?

 

If the seal needs oil to seal, then it makes perfect sense it might leak until it's primed with oil.
This is common on the later builds when doing an STC, to have air hiss until it's got oil pressure.
It's also common to think you have a leak after doing various HPO work, since the system is dry it won't seat things properly.
Many folks myself included have done a top injector seal or ball tube o-ring, only to pressurize things and find another leak, when in fact it's not a new leak, just the same spot that needs to have the air displaced with oil.
I'm not saying that is for sure the case here, just offering another point of view.

Just curious, did you get an Adrenaline pump? Or OEM reman?

 

If the seal needs oil to seal, then it makes perfect sense it might leak until it's primed with oil.
This is common on the later builds when doing an STC, to have air hiss until it's got oil pressure.
It's also common to think you have a leak after doing various HPO work, since the system is dry it won't seat things properly.
Many folks myself included have done a top injector seal or ball tube o-ring, only to pressurize things and find another leak, when in fact it's not a new leak, just the same spot that needs to have the air displaced with oil.
I'm not saying that is for sure the case here, just offering another point of view.


Stupid duplicate post alert*****

 

It's an Adrenaline pump by the way. Don't think I stated that before.

 

Good choice. Page 42 of the coffee table book located in the tech folder will address your concerns I think. Minor leakage is mentioned and considered normal.

https://www.ford-trucks.com/ford-man...eTableBook.pdf

 

Good choice. Page 42 of the coffee table book located in the tech folder will address your concerns I think. Minor leakage is mentioned and considered normal.

https://www.ford-trucks.com/ford-man...eTableBook.pdf


Wow, the internet really sucks here today PIT friggin A

 

Talked to the tech from DieselSite. She said it's perfectly normal to get air from that wiper seal. Also, it's not a good idea to put air through these pumps if they've never been run. She said that can unseat the control plate, and if I have 0 PSI once I get to the point of cranking it over, that's why. Now that I know that's good, back to installing. Whew!

 

I'd bet lunch that once the positive pressure of oil hits the seal and seats it the leak will stop. Can you assemble it just enough to crank it using the starter trigger wire so the pump can fill with oil and build pressure then recheck?

 

Good to know.. My Adrenaline pump just showed up today. It almost looks too nice to put it in my dirty *** engine.