How to Fix Leaking HPOP Hose

In many cases, the cause of a leaking high pressure oil pump (HPOP) hose can be traced back to faulty O-rings. Typically, most DIY mechanics can complete this job in a two or three hours. Start by buying either the appropriate O-rings for your vehicle or a kit that contains the O-rings from the manufacturer.

Make Things Easier for Yourself

Since space in tight under the hood, it pays to do whatever you can to make things easier. Though some people have repaired a leaking hose while it is still attached, it is much easier to remove it from the vehicle. In addition, short and stubby wrenches can seem like an unnecessary expense, but they make maneuvering in tight spaces much easier and well worth it if you have large hands.

Completing the Repair

You will find two connections at either end of the hose. Remove those and the job will be much easier to complete. Move the wire that is there gently aside. Using a tool that fits the opening, remove the lines so that you can access the hose. Use the stubby sockets to remove the fittings.

Precision is the Key

Once you have access to the springs, use the longest needle-nose pliers you have to gently remove them. Then remove the plug that rests at the back of the hose. Remove the old O-rings and pop on the new ones. It is important that the springs go back into the pump with their caps first. Make sure that the oil lines are snapped on tightly when you put them back on.


7.3L Diesel Engine Weak Points

7.3L Diesel Engine Weak Points

Every engine has its own unique weak points, and the 7.3L diesel engine is no exception. The precise issues and severity of the concerns may vary, but when you recognize that there are common weak points that do arise in the 7.3L diesel engine, you will find those concerns easier to identify and correct.

Limited Power

7.3L diesel engines are not at the high end when it comes to power. This can lead you into problems if you seek to improve the engine to make it more powerful. Most mechanics advise that you not alter the engine by doing anything other than replacing faulty parts and handling routine maintenance.

One of the issues with the 7.3L diesel is the potential for failing parts. If you maintain your engine properly, you can avoid or limit repairs. Some issues, however, may require immediate parts repairs or replacements when you encounter a problem.

Problems with Short Trips on a 7.3L Diesel

If you only drive short distances, your engine may experience cylinder washing. This is the process by which unburned fuel partially eliminates oil’s protective barrier on the cylinders. This may score your cylinder walls over the miles, which could lead to decreased compression and blow-by.

Issues with Transmissions

Most mechanics consider the 7.3L diesel’s main problem to be the transmission. It is more likely than most to “catch and slip”, which occurs more often in cold weather, and can cause headaches when you’re at stop signs and traffic lights. Vehicles with automatic transmissions are the ones that usually develop this problem.

Failure of CAM Position Sensors

Another issue that happens with regularity on the 7.3L diesel engine is parts failure. You may experience various problems with parts, but the CAM position sensor is one of the most common problems.

If you have a CAM position sensor fail, it will usually need replacement. It is not an expensive part, if you compare it to other parts that might have issues, but owners consider it a troublesome problem.


Glow Plugs: Small, But Powerful

Every engine needs a catalyst in order to turn the fuel into energy. While most cars on the road (as well as motorcycles, lawnmowers, and other gas-powered vehicles) use a spark plug, a diesel engine like the Ford Powerstroke does not use a spark plug like a traditional gasoline engine, on account of the fact that diesel tends to be more difficult to ignite and burns much slower than gasoline. Instead, a diesel Powerstroke uses a glow plug, a thumb-sized heating device that will use a compression formula to raise both pressure and temperature of air. When the diesel within the fuel tank comes in contact with this high-pressure, high-temperature air, it ignites.

A glow plug uses the same basic formula as a toaster. Within the plug are bands of electrical wiring that generate heat and light on account of the resistance in each band. With greater resistance to the flow of energy (provided by the battery of the vehicle) comes greater heat and pressure, eventually making it hot enough to turn the diesel fuel into energy. Older engines needed to turn from off to start and then to on, since the glow plug could not heat up quickly enough to start the engine. In today’s Powerstroke engines, however, it’s possible to start it up much faster — especially if the engine has recently been running and still retains the warmth needed to ignite the diesel. This is one reason why it is sometimes more energy efficient to allow a diesel engine to run continually instead of turning it off for a certain period, usually around an hour or so.