HPOP Issue
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More Turbo
Joined: Feb 2018
Posts: 504
Likes: 24
From: CT
HPOP Issue
Having an issue with my high pressure oil system.
Truck has a CNCFAB stage 2 HPOP that’s maybe 2 years old.
In my hot tunes the ICP pressure will drop to as low as 1800psi in a WOT pull with the IPR% maxing out.
The second I let off the PSI jumps to 3000-3400psi, and if I’m below 3/4 throttle the PSI will hold at 3000psi.
In my daily tunes the ICP will run to about 2800psi and stop with no issues at the top end.
I have no oil in my fuel, I have no visible leaks, I tested both heads for leaks and I cannot find anything.
Anyone have any tips on this?
Truck has a CNCFAB stage 2 HPOP that’s maybe 2 years old.
In my hot tunes the ICP pressure will drop to as low as 1800psi in a WOT pull with the IPR% maxing out.
The second I let off the PSI jumps to 3000-3400psi, and if I’m below 3/4 throttle the PSI will hold at 3000psi.
In my daily tunes the ICP will run to about 2800psi and stop with no issues at the top end.
I have no oil in my fuel, I have no visible leaks, I tested both heads for leaks and I cannot find anything.
Anyone have any tips on this?
Thread Starter
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More Turbo
Joined: Feb 2018
Posts: 504
Likes: 24
From: CT
180/30 Injectors, 45k on them, 3 years old.
Fuel pressure WOT ~58psi.
I doubt its tunes, I’ve had this set up for 2 years now and it’s had no issues to this point.
But in the past I’ve seen as high as 3200psi WOT in the hottest tune with my IPR around 45%
Fuel pressure WOT ~58psi.
I doubt its tunes, I’ve had this set up for 2 years now and it’s had no issues to this point.
But in the past I’ve seen as high as 3200psi WOT in the hottest tune with my IPR around 45%
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with only 45k on them? Not saying it can’t be just a little surprised they can crap out that fast.
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Thread Starter
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More Turbo
Joined: Feb 2018
Posts: 504
Likes: 24
From: CT
Definitely not poppets I had that issue on another truck and it would not start hot. This truck starts hot fine.
IPW is 3.72 ms.
Might be the upper O ring but no oil is in the fuel. Not a drop. I have no oil consumption either. Maybe the oil rail drain plugs?
IPW is 3.72 ms.
Might be the upper O ring but no oil is in the fuel. Not a drop. I have no oil consumption either. Maybe the oil rail drain plugs?
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More Turbo
Joined: Feb 2018
Posts: 504
Likes: 24
From: CT
And I believe I have the instructions to measure the gaps for the poppet valves.