Ford Doctor
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Everything posted by Ford Doctor
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From the album: Oil And Water
On 6.7L Power Strokes coolant leaks commonly originate from the turbocharger coolant supply quick connect fitting. When inspecting for leaks consider looking here.© Keith Browning
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From the album: Oil And Water
On 6.7L Power Strokes oil leaks commonly originate from the turbocharger oil supply quick connect fitting. When inspecting for leaks consider looking here.© Keith Browning
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From the album: Fuel System Failures
This is a cross section of a damaged 6.7L High Pressure Fuel Pump that had Diesel Exhaust Fluid run through the fuel system after it was accidentally poured into the fuel tank. The corrosive nature of DEF eventually led to this pump seizing during operation and splitting the case in the process. Notice the rust colored crystals and the scuffing.© Keith Browning
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Over the years we have encountered many fuel system problems ranging from rusty tanks to evolving fuel systems that had many quirks not to mention a variety of owner induced and fuel quality concerns.
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From the album: Oil And Water
From a failed HPOP (high pressure oil pump) this is the pump body where the swash plate and cylinder block are installed. A light press fit is intended to hold the swash plate in place but apparently they can spin - notice the matching scuff marks to the swash plate photo. .© Keith Browning
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From the album: Oil And Water
From a failed HPOP (high pressure oil pump) you can see the scuffing on the side of this aluminum swash plate body.© Keith Browning
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From the album: Fuel System Failures
Another shot of a leaking injector detected using Ultra Violet tracer dye. This is a high pressure fuel leak from the injector body itself which required running the engine to see the leak. It did not take long to become evident.© keithbrowning
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From the album: Oil And Water
The ICP sensor port plug seals tend to fail on left side high pressure oil manifolds on 4.5L Power Strokes. Always include this plug in your inspection for leaks and always install the new plug that comes with the stand-pipe service kit ensuring to properly torque it to prevent a repeat failure. For some reason the factory plugs tend to loosen and blow the seals out.© Keith Browning
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From the album: Air Management Failures
Coated with oil and possibly dirt this MAF (Mass Airflow) sensor is not as efficient as it should be. Used for fuel delivery and air management this sensor needs to be accurate. Inspect this sensor when ever the air filter is removed and if necessary clean with any MAF sensor cleaning product labeled specifically cleaning MAF sensors. Using products such as brake cleaner will damage the sensor components.© Keith Browning
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From the album: Fuel System Failures
This is a broken fuel injector hold-down clamp from a 6.7L Power Stroke diesel engine. We have heard of several reports of this failure. While there is no official information about this we have heard that the bolt that secures this clamp is suspect.© Keith Browning
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From the album: Fuel System Failures
This 6.4L HFCM has a greasy build-up in the water seperator chamber believed to be paraffin from the fuel. If you encounter a vehicle with a water separator drain that will not drain with the valve open or the water in fuel lamp stays on continuously check for this condition© Keith Browning
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From the album: Fuel System Failures
When performing ICP leak testing and inspections include the injector inlet o-rings and retainers. This 6.0L injector shows a failed backer ring and o-ring. Some re-man companies state this failure is the result of improper oil manifold installation. All of the examples we came across were factory injectors in 2005 model year engines. Sources indicated there were machining inconsistencies with the snap ring grooves that caused a run of injectors to fail.© Keith Browning
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From the album: Fuel System Failures
Aside from the large amount of dirt in the bottom of this 6.0L primary filter housing we can see pieces of an old filter left behind. It is important to inspect the filter housing for debris when servicing filters. Remove and flush out as required.© Keith Browning
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From the album: Fuel System Failures
Fuel samples are an important part of the diagnostic process. We had some interesting samples laying around so we put some in a test tube and took pictures for comparison. Starting with clean #2 diesel on the left the samples progress to water contamination, rust and silt, off road fuel, chemical or biological contamination and lastly cross contamination with engine oil from a 7.3L known as black fuel. It actually has a bluish tint to it.© Keith Browning
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From the album: Fuel System Failures
This is what fuel tank delamination looks like in this Econoline mid-ship fuel tank. Supposedly some bio-fuels will cause this however you can still see the surface rust forming on the upper part of the tank. The loose lining material quickly clogs the pick-up screen and fuel filter© Keith Browning
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From the album: Fuel System Failures
You are looking at a fuel pick-up screen fom a diesel fuel tank. The bypass valve has come loose and has fallen from the pick-up which allowed air to enter the fuel system when the fuel level was below a 1/4 tank.© Keith Browning
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From the album: Fuel System Failures
Ultra-violet dye can be put into the primary fuel filter housing to aid in detecting high pressure fuel leaks in 6.4L Power Stroke engines. It is easy to see the bright green dye in this picture where fuel is leaking from the injector inlet fitting.© Keith Browning
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From the album: Fuel System Failures
Similar in theory to the Baloon Test, what we call the Bubble Test is designed to detect combustion gasses leaking into the fuel system through an injector. The test requires filling the primary filter housing with fuel and looking for bubbles while cranking the engine.© Keith Browning
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From the album: Fuel System Failures
This is a water in fuel sensor removed from a 6.0L HFCM with what looks like waxy paraffin build-up acting like water on the sensor terminals. This will cause false water in fuel warnings and warnings that will not go off after draining the water separator.© Keith Browning
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From the album: Fuel System Failures
From a neglected 7.3L Power Stroke comes a plugged fuel filter from dirt and rust from the tank. Finding a fuel bowl in this condition means that a shorter fuel filter service interval is required and possibly inspection of the fuel storage and delivery system.© Keith Browning
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From the album: Fuel System Failures
These fuel strainers are quite clogged. The strainers are inside the thermo-recirculation valve of the fuel pick up on some F-Series diesel trucks. The cause of difficult to diagnose low fuel pressure and low power complaints, many owners and technicians are not aware of them. They can be serviced by carefully disassembling the pick-up to be cleaned or replaced.© Keith Browning
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From the album: Fuel System Failures
This 6.0L fuel injector cup is the companion to the failed injector in the last image. Looking into the center you can see the sealing surface is not flat and smooth preventing a good seal. This will allow hot combustion gasses to leak past this seal burning it in the process.© Keith Browning
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From the album: Fuel System Failures
This 6.0L fuel injector was part of a repeat failure caused by a damaged fuel injector cup. The cup was not properly inspected and replaced when the original injector was serviced. Notice how the copper seal was damaged by the injector moving in it's bore.© Keith Browning
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From the album: Fuel System Failures
These are 7.3L fuel injector cups. A new one on the left and a used one on the right. It is necessary to service these if the crack or loosen in their bores allowing fuel to enter the cooling system. Replacement is also recommended when an injector is found loose or the copper seal has been burned or the engine has severely overheated.© Keith Browning
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From the album: Fuel System Failures
This 7.3L fuel injector was likely the victim of improper installation or tightening though a cracked injector cup could also lead to this. Combustion gasses were allowed to pass the copper washer at the tip of the injector and melt the lower fuel o-ring. The damage is quite clear - observe the carbon between the tip and the o-ring.© Keith Browning
