How do i know if my HPOP 7.3 is bad?-10 Symptoms 

The high-pressure oil pumps (HPOP) were designed to operate the Hydraulic Electronic Unit Injectors (HEUI) fuel system, a green alternative to rail injectors. The crankshaft in the engine drives the HPOP, pressing the engine oil and devoting fuel that is sprayed to the chambers of combustion.

How do i know if my HPOP 7.3 is bad? The signs that indicate the symptoms of a 7.3 high-pressure oil pump are the oil-warning light on the dashboard, accompanied by a whining sound from the engine compartment. Blue smoke from the exhaust, unusually long crank times, and a loss of power, when the engine runs at high RPMs, are indicators of a defective 7.3 high-pressure oil pump.

This article will take you an in-depth look at indications of a troubled 7.3 high-pressure oil pump.

1.The Oil Pressure Warning Light

The warning light for oil pressure is a sign that the oil pressure in your engine is not at normal levels. Oil plays a crucial function in the engine’s lubrication process and temperature control. Low oil pressure could cause damage to parts of the engine, resulting in costly repairs.

Many issues can cause the flashing of the warning light for oil pressure, such as:

The HPOP is engineered to pump oil to specified pressures. Therefore, if it’s not working properly, the pressure will decrease, which triggers the alarm.

Because of the importance of oil in an engine, It is crucial to deal with the warning light on oil pressure whenever it comes on.

  1. Whining or Whirring Noises from the Engine
    Diesel engines emit a stout growl that many people who love diesel consider harmonious. One advantage of the diesel engine’s sound is that it’s easy to recognize unusual noises.

A whining sound or whirring from the engine could indicate a defective oil pump. It could mean your HPOP may be on its last feet.

Different engine components can generate whining and whirring noises when they are malfunctioning. If the noise is more intense as you accelerate, it could be coming at the pump that is causing it.

The HPOP is linked to the crankshaft. So, the more quickly the crankshaft rotates, the faster the pump will work. This is why the engine that is not working properly makes more noise.

  1. Blue Smoke Coming From the Exhaust
    The oil shouldn’t get to the chamber of combustion. Oil may leak for various reasons, for example, a broken HPOP.

The blue smoke from the exhaust means that oil has gotten into the combustion chamber. Oil deposits usually follow Smoke on the tip of the exhaust.

When an engine burns oil, the level decreases, which causes more drops in the oil pressure. Insufficient oil pressure can lead to devastating failures. Therefore, you must have the problem fixed as quickly as possible.

  1. Atypically Long Cranking Time
    In normal conditions, the time should be at most three seconds to turn on an engine that runs on diesel. When it’s cold, the time to crank it typically lasts five to six minutes.

If it takes more than three seconds when it is warm and five seconds when it is cold to get the engine started, You may have an HPOP issue.

Additionally, as the engine warms up, the performance decreases, and the car stops working when idle. As the engine warms up, the oil becomes denser and capable of transferring energy more efficiently with less impact from the HPOP.

But, as the engine oil heats up, it gets thinner and less efficient at transferring. This makes the HPOP more efficient, which is a straightforward task for a flawless HPOP. However, an unfunctioning HPOP cannot pressurize the less dense oil, which can cause an increase in performance.

  1. The loss of power at high RPMs
    The HPOP is linked with the crankshaft. The extra pressure applied to the accelerator causes the crankshaft to move faster, thereby increasing RPMs and accelerating the HPOP more quickly—the higher pressure on the oil forces greater combustion, increasing the vehicle’s speed.

A defective HPOP might not be able to respond to the right foot’s input. If it fails to raise the pressure in the oil, it won’t show any increase in the power or speed with higher RPMs because the oil pressure will not be sufficient to push additional fuel into the combustion chamber.

  1. Overheating Engine
    Oil is a coolant and lubricant for the engine. Thus, a decrease in the quantity or pressure of oil could cause a problem with cooling. The needle of the temperature pressure gauge generally rests halfway when everything’s operating correctly.

If the needle begins to rise towards the red zone, the engine’s temperature has risen excessively high. An indicator light in the dashboard could be visible, signalling an overheated engine.

A problem with the coolant system could cause excessive heat and the HPOP to be faulty. The oil that circulates at low pressure does not have the same cooling characteristics as oil flowing at the ideal pressure.

The overheated engine can cause serious, costly damage to the engine. If you experience this type of symptom, bring your vehicle to a qualified mechanic as soon as possible.

  1. Oil deposits within the Fuel Filter
    As mentioned earlier, a malfunctioning HPOP can lead to oil leaks in the combustion chamber. The leaks could be hard to detect because diesel engines efficiently consume oil.

If you’ve noticed an unanswered drop in power and think an issue with your HPOP could be to blame, then the fuel filter could be the answer you’re looking for.

The pressure produced by the HPOP could cause the oil to flow back into the area where it is a fuel filter and contaminate your fuel filter. Stains of oil on the filter could suggest that your car is suffering from a malfunctioning HPOP.

  1. The High Exhaust Temperature of Gas
    Suppose an engine like a 7.3 Powerstroke is working at its maximum, for example, towing a camper down a hill. In that case, exhaust gas temperatures should not exceed 1250degF (676.7degC)—the high temperatures of exhaust gas cause heat-related engine damage.

In addition, they indicate to the chambers that they’re absorbing more fuel than oxygen can handle. The extra fuel in the combustion chambers produces heat.

The high EGT levels usually indicate an issue with your injector. However, occasionally, they might suggest a problem with your HPOP.

  1. Oil Depositions inside the Engine Valley
    The oil deposits in the engine valley are a sign of oil leaks from the system. HPOP leaks are fairly uncommon, and many mistakenly identify the HPOP leak as an internal leak in the main seal of the rear.

Use these guidelines to identify the source of an HPOP leak:

Make sure the valley is clean.
Clean the fittings connecting to HPOP free of debris, dirt and other debris.
Start the engine and rev it up a bit.
Take an extra look.
If oil accumulates on the fittings or around the HPOP drain fitting, you may have a problem with your HPOP high-tension oil pump.

  1. P1211 Diagnostic Trouble Code
    A technician employs the code reader to pinpoint the cause of the check engine light. The P1211 code indicates an HPOP problem and the Injection Pressure Regulator (IPR) leak. The IPR is the one that controls the amount of oil pressure that the HPOP creates.

When the engine check light goes on because of an HPOP leak, you’ll be aware of other symptoms indicating HPOP malfunctions: tiny HPOP leaks don’t usually trigger the Engine Warning Light.

A check engine indicator is typically illuminated if an HPOP leaks so badly that it can’t produce enough pressure to start the engine and keep it idle.

I’ve written this article on diagnosing trouble, some codes explaining the code P04DB on the 6.7 Powerstroke and detailing how to detail or.

HPOP Price for Repair and Replacement

Depending on the degree of damage to the HPOP, It is possible to repair and replace the HPOP. Repairing the HPOP typically involves swapping out the seals with ones that aren’t leaking.

It’s not expensive, but it’s only temporary. It can prolong the lifespan of an HPOP. However, the device is likely to fail again. It is possible to replace the seals for an interim solution if you need to be able to pay to purchase a brand-new HPOP.

Repairing a malfunctioning HPOP is a guaranteed way of removing HPOP issues. Based on the type and age of the HPOP, replacing the HPOP can cost between $300 and $800. Remanufactured HPOPs cost less than brand-new ones, but they’re less durable.

Based on the complexity of the task, the labour cost can range from $150 to $500. Thus, the price to replace a 7.3L Powerstroke HPOP is between $450 and $1,300.

If you’ve had experience working on Powerstroke 7.3L Powerstroke, you can change the HPOP and save having to pay for labour. It’s easy. If you need engineering knowledge, allow a professional to handle the replacement.

How to Keep Your HPOP Running

HPOP maintenance is simple due to the pump’s superior endurance. Ford produced high-pressure oil pumps lasting several hundred thousand miles with little maintenance.

It is enough to ask a technician to examine the condition of your HPOP at your regular service visits.

Most drivers check their HPOP over time when something happens to be wrong. But, if you’ve increased the power of your 7.3L Powerstroke, you need to be more attentive at the HPOP.

Ford created the HPOP to deal with the 7.3L Powerstroke’s standard configuration. After you have tuned the engine, it forces the HPOP to work harder to meet the higher power demands. The added effort wears the HPOP out more quickly while adjusting it to 7.3L decreases its durability.

Other Comments to Consider Concerning The P226C Code

Code P226C can cause an engine to appear to have more power than it actually has.

While it might seem beneficial, it could make the engine rupture holes in the pistons as well as head gaskets. If your vehicle has an issue with the over boost do not drive it until the issue is fixed.

Make sure that your vehicle’s engine is off if intend to tackle the repair yourself. It’s not a good idea to tackle the engine of a reciprocating.

It could result in an eventual fatality.


Vehicles equipped with the P226C code shouldn’t be driven because they may fail or weaken at any point. If the vehicle loses power suddenly in the middle of a traffic jam the car could result in an accident.

I’m sure that the discussion we had today has provided you with all the information wanted to know. If the Cummins P226C code was activated, it was done. Be aware of the code, and try to fix it as fast as possible.

Review all of my suggestions and, if required consult with a professional.

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Related topic:P226C Code On 6.7L Cummins

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