Where is the location of the high-pressure oil pump in a 7.3L engine? The high-pressure oil pump is situated at the front of the lifter valley of the 7.3L engine’s front.
If you want to know more about the 7.3 HPOP location and how to access it, then you can follow this article. Here, we have covered all the important facts about this topic.
Your vehicle will never be able to reach its full potential if your high-pressure oil pump is unable to keep up with the needs of your vehicle due to age, bigger displacement injectors, chips, or programmers. So explore!
Why 7.3 HPOP Is Different And What Does It Do?
When you think about a high-pressure oil pump, then you need to know that it is a critical component of a Powerstroke engine. As its name suggests, it’s a high-pressure pump that distributes lubricating oil to other engine components.
A high-pressure oil pump, which is also known as the “H-POP,” is like the beating heart of your 7.3L Powerstroke engine.
A high-pressure oil pump produces high-pressure oil flow to ensure the effective and proper operation of the diesel fuel injection system in your engine.
According to Diesel World Magazine, still many car enthusiasts don’t know that the function of HPOP in the new 7.3L Powerstroke engine is no longer the same as it used to be 30 years back in the HEUI system. And most of these high-pressure oil pumps contain 7 pistons, which help in sending the amount of oil from HPOP to determine the pressure.
Oh, these HPOPs with 7 pistons are also known as swashplate-style oil pressure pumps. And so, the function, as well as the location, can vary from manufacturer to manufacturer.
Where Is The 7.3 HPOP Location?
The surprising fact is that the 7.3L Powerstroke engine uses the HPOP from the Bosch brand. Our researchers have found out that on the front side of the lifter valley, the HPOP is mounted to the engine’s front cover. The drive gear is not timed to the pump or the cam.
A high-pressure oil pump produces the oil pressure needed to drive your fuel injectors of the 7.3L Powerstroke engine. So it can be said that the high-pressure oil pump mounts to the 7.3L engine’s front cover at the lifter valley’s front side, close to the fuel filter bowl.
Physically, this pump mounts to the 7.3L engine’s front cover through two bolts. Firstly, you need to remove your engine’s front cover plate to access the bolts. Then, you have to use a 10 millimeters socket to install or remove both of these bolts. This way, you can gain access to the HPOP.
Our researchers have found that the one connecting the driver-side high-pressure oil pump to the front cover is longer because of the two fasteners. With a reusable gasket, the HPOP is mounted to the front cover. If you want to know the 1996 7.3 HPOP location, it is exactly next to your 7.3L engine’s fuel filter bowl.
A user said regarding the 1999 7.3L engine’s location on a forum on The Diesel Stop,
“The HPOP is located directly below the fuel bowl. If you look at the 2:00 position of the bowl and notice the brass plug that you see, you are looking at a part of the HPOP. If you look to the right of the fuel bowl, you will see two lines that come in under the fuel bowl, they are hooked into the HPOP.”
Frequently Asked Questions (FAQs)
Where does the check ball go on 7.3 HPOP?
The check ball on the 7.3L engine’s high-pressure oil pumps generally goes into the oil line fittings. It is a plastic check ball that’s held in its place by the “Serviceable Plug” situated underneath the HPOP. This is the original check ball that can be found in all 7.3 diesel HPOPs from 1994 to 2003. It may crack over time, resulting in a “No Start” problem. This ball can get damaged when changing the serviceable plug.
What happens when HPOP fails?
You will face many problems when the high-pressure oil pump fails. These include ICP sensor leakage and reading wrongly, oil leakage in the engine valley, long crank time to start the engine, leaky injector O-rings, and sooty acceleration. You can also sometimes see that the engine starts when cold, but when warm, it will start hard or not start.
What does the HPOP crossover line do?
The right and left high-pressure oil rails are connected by an HPOP crossover line. This enables the PCM to monitor both high-pressure oil rails pressure. For a smoother engine operation, the HPOP crossover line removes ICP spikes. It will also help to feed oil to injectors better. The HPOP crossover line also balances oil pressures to make the engine operation quieter. However, it is another source of leaks.
Final Words
When the HPOP is not working correctly, you might get a burning odor under the hood. Your exhaust system may possibly be leaking oil, which would create something like blue smoke. In such cases, you may have to replace your high-pressure oil pump, and for that reason, you need to know the HPOP location. Finding the location of the high-pressure oil pump on a 7.3L engine is a tough task.
We are hopeful that this article has helped you to know the high-pressure oil pump’s location on your 7.3L engine, and you can now easily replace your HPOP. Still, if any more question arises in your mind regarding the 7.3 HPOP location, then feel free to write in the comment box.
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