has anybody out there had an hpop fail ?? im thinking thats whats wrong with my truck but its not dead set symptoms

 

what is the "hpop"????

 

Do you have access to a scan tool? If so I would check to see what pressure your HPOP is running at idle to WOT. Keep in mind if you do not have the HX hose you will only see the pressure from the driver side head which still will give you a good indication if you have low oil pressure to the injectors.

 

i am new what is the "hpop"???? an hx hose???

 

A HPOP is the High Pressure Oil Pump that takes engine oil and basically uses it as hydraulic fluid and pressurizes it up to to 3000 psi to operate the Injectors. It is located at the top front of the engine in the valley.

A HX hose is a modification where the plugs in both heads between 8&6 and 5&7 cylinders are removed and a crossover hose installed in place of the plugs to cross connect the High Pressure Oil Passages in both heads. This helps equalize the pressures between the two heads and sometimes results in quieter and smoother operation.

Hammer

 

What kinda symptoms are you having? How many miles are on your engine? Most of the times ive seen a failure to the HPOP caused a no start situation. Which the pump was not delivering enough pressure to the rails(heads/injectors).

Someone fill me in a lil more on this HX crossover line. Does this work? How are you liking it? (before and after)

With a scan tool installed, reading ICP pressure you are reading the sensor which is located on the driverside head. However, that reading will be the same for both heads unless you are having injector o-ring/injector problems on the passenger side head which is undetectable w/ a scan tool. The you can remove the line at the HPOP that goes to the left head and send shop air into it and listen for air underneath the valve cover. same thing for the driver side.

 

I installed my HX line about 20,000 miles ago and have noticed that the truck idles a whole lot smoother and also seems to be quieter on the highway. Since I put mine on a few other friends have also done the same after hearing how my truck runs, all in all I think it is worth the $45.00.

 

international tech, your the one im needin to talk to read my post under no oil pressure or icp disconnect. basically ran truck hard after i got out of it is didnt seem right idled all the way down long hill in 4th 2000rpms, pushed in clutch at bottom and it was missing, had oil pressure on gauge then. got out shut truck down did a visual check on everything and checked fluids everything was good. limped it the rest of the way home like 5 mins, when i was almost home the oil pressure gauge dropped as i came to stop sign and got it home. oil had 2000 miles on it rotella...checked my hpop res when got home it was full. put pressure gauge on at oil filter get 25 psi 650rpm cold 14 hot. 50psi wot hot 3000rpm. pressure picks up on dash gauge at 1600 ish rpms consistantly. its like its bypassing oil somewhere. im just not stuck on it being lpop dying it happened too suddenly. the one on my other service truck went over 500k miles and god only knows how many hours of pto run time running the hydraulics for the boom and generator. changed oil and fuel filters and put new oil in it and it runs better but still not right . its missing at idle and dosnt pick up well till about the time when oil pressure gauge comes up. im trying to find out if fuel pressure has anything to do with the way it distributes lube oil to the hpop and everywhere else. the hpop res has always stayed full checked hot cold long time sitting......theres a check valve in the heat exchanger that im wondering about also. but im wondering after a hard run then getting out of it if fuel pump has started to dye on me or pressure relive valve on the lube oil system had gone wako on me and is stuck partially open and now cant build pressure to rest of system untill there its lots of volume and pressure ???? or did something crack somewhere??? coolant is clean, and only a couple months old....oil was in great shape coming out with only 2000miles on it...fuel filter was in need of being changed. but looked normally dirty, ive always seen a whiteish power on filters and in the sediment bowl when ive had a pump go south on me. and that wasnt there. i just gotta get this truck back on the road.....and im gonna oring the ipr and tried unplugging ipr while idleing to see if it was sticking but truck dies right away which is what im told its supposed to do...im trying to think of what other electronics sensors or valving could have caused this sudden problem...it seems just fine in the higher rpm range also. which if a lube pump was going i would think it would be starving the hpop at high rpm demand and not be able to create 50psi of lube pressure at filter????? international and ford cant even plug it in to the computer till next week there soo busy.....i gotta have that truck back in the road by then..i would love to have that software they have for there computer to minitor this motor. if you have anything else or ideas post it on here or email me or call

 

I already mentioned how it is connected, I believe the theory of one of the reasons as to why it works is because cylinders 6 & 8 fire right after each other so the HX line helps supply oil pressure between those two cylinders and therefore ensures number 8 doesn't get "short changed" on HPO pressure. I did the mod and the sudden drop in engine noise was very noticeable.

Hammer

 

InternationalTech, I am another who has installed the HX hose and love it. The idle sounds as good as a 6.0. Very smooth and even.

 

where do you get the "hx" hose at I am wanting one?

 

I looked amoung the sponsors of this website and could not find anyone who supplies an HX hose. The one that I bought is from www.dieselinnovations.com. I cut and copied from thier site:

High Pressure Oil Rail Crossover Hose

This hose is used to bridge the 2 high pressure oil rails in the heads that feed the injectors. The installation of this hose will typically smooth out rough idles as the ICP can now sense the pressure in both heads, quiet the engine, as well as provide improved oil flow to the injectors.

$45.00

 

I ordered the new "hard line" HPX this week from a new vendor and should have it soon.
I'll replace my hose version of the HPX with the hard line ASAP.
Several of the hard line HPX's have been Beta tested for about a year now with no leaks or explosions.
It will be available to all PSD's owners soon.

 

Sounds great. Where did you get it?

 

This vendor will be putting up his web site soon.
He also has some interesting niche products as well.
Met him personally and he is in the aerospace engineering and machining industry.
His contacts in the aeropace industry and his specialty component access can be utilized in our PSD's.
I'll post some pix on the HPX install and results.
He's building a few extras.