But otherwise, I'd swear I was running out of fuel or timing is being thrown out. This device is prone to face troubles. If the pressure is low, it means that the fuel check valve is faulty. If you search for it there, you must find it.
That was the way to locate the fuel check valve on a Cat 3406e. C15 cat fuel system diagram. But I called around and the consensus is that if the sensor and pedal ( complete) is changed then no, no need to calibrate. If faulty, it can cause the pressure to drop or if cracked (like ours), allow air to enter the fuel system. In order to troubleshoot a Cat 3406e gas engine issue, it is important to first determine where the fuel check valve is located.
As I recently found out, some CATs don't have a fuel return line. So is the fuel pressure regulator valve, the same thing as the fuel return bypass valve? Check valves are relatively inexpensive. Here we find both images that will help you to locate the fuel check valve. If you talk about Cat 3406e then you will find the same problem here too. Fuel temps can easily reach 150*F by the end of the day in the summer monthsTom'o Thanks this. Cat c15 fuel shut off solenoid location. I spent my life around the mechanical cat, I'm in the back of the short bus when it comes to these new 11 year old engines. There are some tips to understand if the fuel valve is working properly or not.
Let's try finding its location and know some important things about it. Fuel pressure regulator valve changed 3x. I can put foot to floor through all 18 gears and no issues. Another symptom of a faulty fuel check valve on Cat 3406e is not generating enough power. The check valve is usually located on the side of the Bosch injection pump or in our case with the 2 cycle Detroit, located where the fuel returns to the tank. Shim it up and then the valve in the filer base is controlling fuel pressure. If this component is not working properly, fuel will leak into the engine, and the engine will not start. But to locate the exact position, you need to know what is fuel rail and where it is located. I shopped around and got ours for under $40. Always use CAT filters. Cat 3406e Fuel Check Valve Problems. Where Is The Fuel Check Valve Location On Cat 3406e. What is the relationship between the spring in the transfer pump and the pressure regulator valve?
Both wiring harness replaced. One day " my" unresolved problem will also be behind me. Mike, Most diesels have a check valve to keep pressure at specs for the main injector pump. Another 6NZ fuel preasure?? The fuel check valve is a small, circular device that prevents fuel from flowing backward through the engine. Good time to "overhaul" the manual primer pump too (if you have one).
These problems are universal and these are true for all types of engines. But if the sensor "only" is changed then yes, it should be calibrated but the guy's at CAT say it won't make a huge difference.. Gonna get it done anyway, gotta get to the bottom of this. Bottom gears from a stand still, all the clean smooth power I want. It's driving me insane. If your engine is not starting, you may have a faulty fuel check valve. Cat c15 fuel system schematic. If this happens, the engine will not get enough fuel. Since fuel pressure is increased by shimming the spring in the transfer pump. Any time I'm off the throttle 5+ seconds all is Good thereafter for usually the next 5 to 15 seconds of regular throttling. The engine with a problematic fuel check valve will not be able to generate enough power. Very easy to check pressure. Why Do You Need to Locate Fuel Check Valve On Cat 3406e?
The check valve is inside it. Zero air in Fuel, both pre and post head ( CAT hooked up sight glasses we drive for 90 minutes). Throttle positioning sensor was never calibrated was told not needed. CAT said zero blow by on injector seats and O rings when they ( under my platinum warranty) swapped out all 6 injectors trying to resolve my issue. If you don't know where is the fuel check valve located on Cat 3406e, it will be impossible for you to deal with that. So, you should understand how important this component is for your Caterpillar engine, especially for 3406e. Zero blockage in exhaust. It is known that the fuel check valve is located near the top of the engine in an area known as the fuel rail.
Let's see what are the problems, their symptoms, and how to fix them. But the 90% of the time over and above that, shake, sputter, pop. Fuel supply lines new. Fuel pressure great. Tank vents all good. Now the reason they are being shimmed is CAT has a weak spring in them allowing fuel to bypass internally in the fuel transfer pump. In order to determine if your fuel check valve is faulty, you will need to keep eye on these things. The first test is to check the pressure in the fuel system. Note the crack in the old valve in the photos below. There is a lack of information about the location of the fuel check valve on a Cat 3406 engine. Most of us went to the dark side, at least now you know your top-end is in great shape. All sensors replaced.
After 10+ hours truckin, the same, all good. Dropped tanks to check suction tubes all good. The problem I've seen is this also increases the flow of fuel through the cylinder head and causes the fuel to pick up more heat. Low fuel pressure can damage the injection pump over an extended period. A faulty fuel check valve will lead to excess fuel entrance into the engine and cause it to misfire. Besides giving you the location direction, we tried to help you by giving related information on this component.
The Transfer pump must have a safety Valve in it incase the fuel filter gets blocked or there is another restriction in the system between the pump itself and the tank. If the fuel check valve becomes blocked, the engine will not start. The most common problem of a Cat 3406e fuel check valve is pressure controlling inability. Low pressure can also be related to a faulty lift pump or clogged filters. Open to ideas if you've got one.
If it is still confusing then the engine diagram will surely help you. Working in a tight RV engine compartment, it's easy to see how a mechanic could cross thread or overtighten as was our case. As a result, It will fail to start. This is only used when trying to prime the fuel system. Divider and divertor valves changed. This valve only functions when the primer pump is used. The air bleed screw is the one on the left side of the filter base and face out towards you. After the truck sits a few days, the same, smoooth running. Another thing you can do to understand its problem. If this component fails to give support to the engine by maintaining enough fuel pressure then you will understand by turning on the ignition. This is universal, and the same is true for Cat engines too. Is it just your engine, or do we ALL have "Fuel Check Valves"? So, knowing the exact location of this component is a must before you start working on it. There are some opinions that it is located on the base of the fuel filter in the Cat 3406e engine.
The Valve in the transfer pump is a safety valve as the return Valve in the filter head is the one that "Should" control Fuel pressure. TPS also a year old. We think then will help you. There are some common problems that a Fuel Check Valve on Cat 3406e may face. How to Tell if Fuel Check Valve Is Faulty on Cat 3406e? The red marks on both images are indicating the fuel filter. The fuel rail or filter is located near the air compressor of the Cat 3406 engine. There are some more symptoms of a faulty fuel check valve on Cat 3406e.
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