When you stop seeing air in the fuel, then the component you have isolated is at fault. I can already tell the gauge isn't exact on reading the auxillary tank. Most commonly caused by a defective pressure control valve (fuel pressure regulator 2) or high pressure regulator (fuel pressure regulator 1). How to prime a duramax after running out of fuel line. Not everything will be fuel-related when it comes to non-starting issues. I hope this helped and good luck, I had to do it at 11:00 at night with a maglite hanging out of my mouth. I made it 20. the fuel tank is all of 26 gallons. The fuel filter housing is on the suction side (there is not a supply pump from the factory) and are prone to suck air.
Maximum restriction at WOT (wide open throttle) is 5 inches HG in park. Crank the engine for 15 seconds and measure the fuel from the regulator. Monitor injector balance rates in park or neutral. How to prime a duramax after running out of fuel lines. We normally set the timing to -1 to -1. Another way to reset the system is to take the battery cables off both batteries. 75ms on later years. It didn't come with a manual, but I can't find the bulb mentioned in other post and don't know where the bleed screw is. Replacing the PMD: The PMD must be mounted to a "heat sink" of some kind. In some cases the "Filter Life Indicator" will be triggered prematurely, sometimes within 1000–5000 miles after changing the fuel filter.
Perform a careful check of the suspected circuit for the following: Inspect and ensure the integrity of all related wiring harness connectors. See PMD replacement guideline below. Repeat the above steps until. If an injector balance rate exceeds -7.
This is due to a better burn when cold and fewer particulates getting to the DPF. Some machines have self bleeding systems, but most require a service call. Known area of harness rub-through. How to prime a duramax after running out of full article. If the condition is still present, and there are NO active DTC's set, go to step7. Regeneration cycles will cause some fuel to leak past the piston rings in the cylinder and into the oil pan. Slide the fuel filter strap wrench about halfway up the fuel filter. Check pump to engine timing.
On some occasions, this code can be set by a bad fuel solenoid in the injection pump. If the coolant level is low, diagnose the cooling system. An EGR cooler that is leaking internally can cause white coolant smoke, often after sitting overnight or for several hours during the day. Fire the truck up and run out of fuel within a few seconds. Ran duramax out of fuel. GM recommends replacing the injection pump, rails, high pressure fuel lines, fuel injectors, fuel return rails, indirect fuel injector, and indirect injector fuel feed tubes if metal is found. General Motors Duramax Diesel - LB7 Fuel System Diagnostics. Poor electrical connections or wiring can cause most intermittent problems. DO NOT REUSE A HEAT TRANSFER PAD. Within the SCR, No2 (Nitrogen dioxide) is converted to nitrogen, carbon dioxide, and water vapor through a catalytic reduction fueled by the injected DEF.
Buy #2, #7 Update for LLY. Since Duramax is a diesel engine, there will be glow plugs inside warming the cylinders. Excessive leakage from the injectors usually results in a starting issue, which could occur hot or cold, but usually occurs hot because the fuel is thinner when hot. Crank or idle the engine for 15 seconds and measure the return quantity. Out of fuel, restart procedures. That's because the poorest-quality fuel settles at the bottom of the tank, and it's often full of sediment. Turn the ignition to the accessory position for about 15 seconds. Similar Diagnostics to P0087. Firing Order 1-2-7-8-4-5-6-3.
DTC P0216 (34) injection pump timing control circuit. When it comes to starting, running and then nothing, check the fuel lines first. It seems that fuel flow is calculated in the ECM and is used to calculate fuel filter life. Once the sediments are trapped inside the filter, the cleaner diesel then flows to the injectors. They did some maintenance work and the pressure returned to normal. How to Replace & Prime a Duramax Fuel Filter. See Misfire Codes further below. Step 4: Prime the primer a few times. This one can be a bit tricky. Use the EN-47589 (same block-off caps as #9011 SPX Miller tools) cap set to cap off the injector rail to isolate the injectors from the injector return system. Red off-road fuel or automatic transmission fluid in fuel can also cause the optical sensor to miss counts.
Some people have suggested that the WIF sensor may have cracked and that is a good possibility. You would have to bleed the system. If all sensors are reading the same ambient air temperature: Start the vehicle and bring the vehicle up to operating temperature. This problem will usually set a low rail pressure code. This code usually sets when the unison ring in the turbo is sticking. This code and the P0251 set when counts are missed from the pump cam but picked up from the engine crank position sensor. When the fuel control solenoid closes, it sends a signal back to the PMD and that is relayed to the PCM. The fuel pressure regulator 2 is on the Left Hand (LH) fuel rail.
If these things check ok, diagnose the high pressure side as if there is low rail pressure codes. Fuel pressure regulator (FPR): Map actual versus desired rail pressure, if the graph is wavy and there is no air in the system it is usually caused by a bad fuel pressure regulator. THE HEAT TRANSFER PAD IS REQUIRED TO PREVENT RAPID FAILURE OF THE FUEL SOLENOID DRIVER FROM OVERHEATING. Turn the engine off. • Leaking high pressure fuel lines. Usually sets in conjunction with a P003A Turbo Boost Control Position Not Learned code. It is a black color and plastic screw so you should not miss it. Most commonly sets due to an aftermarket air filter or intake kit/modifications. Buy LB7 Injector Return Bolts. Move back to the front passenger side wheel well and screw the fuel filter onto the fuel filter housing.
For LLY, LBZ, LMM, see Enhanced Injector Return Flow Test above also. On an OBD2 system use the Tech 2 scan tool to determine which code set first and under what condition, A DTC P0370 (17) can trip a DTC P0251 (18), a DTC P0251 can trip a P0335 (19) and a DTC P0335 can trip a DTC P1216 (35) or DTC P1217 (36). But what happens after that is anyone's guess. Coolant smoke will smell sweet and not burn your eyes like fuel smoke. Signal||597 Hz||683 Hz||768 Hz||853 Hz||2987 Hz||3413 Hz|. If the pressure drops from 10 PSI to 2 PSI in less than 1 minute, remove the fuel outlet line from the filter and cap it.
Tee in a gauge and clear line at the pump inlet or as close as possible to the pump inlet to get a pressure reading and visually check for air bubbles. If no other problems are found, it is likely an injection pump problem. P029D Injector 1 Leak, P02A1Injector 2 Leak, P02A5 Injector 3 Leak, P02A9 Injector 4 Leak, P02AD Injector 5 Leak, P02B1 Injector 6 Leak, P02B5 Injector 7 Leak, P02B9 Injector 8 Leak. If the return volume is greater than 72 ml per bank, replace any individual injector with return volume greater than 18 ml. To bleed it, there is a nut to loose, someone turns the motor over until all the air is out and then after tightening, you pump the button until it gets hard. Cam signal and crank signal||9 Hz||11 Hz||12 Hz||13 Hz||47 Hz||53 Hz|.
Caused the loss of prime. I usually use the DIC to monitor gallons used since last fill. That lets you know the air is gone. Large leaks go into the return system and flow to the tank, these are not external leaks. If the engine runs for ½ -10 seconds then dies and is difficult to re-start, it is most likely a drain back issue. Also be aware that the PMD is powered by a quad driver circuit in the PCM. Sometimes the BCM plug is loose and all you need to do is unplug it and plug it back in again. Verify pump to engine timing: Use a timing meter or timing light with a diesel adapter to verify dynamic injection pump timing. Close the relief valve. Dirty fuel, SVO, no fuel supply pressure (air in system) or dyed fuel can all cause a problem with the encoder sensor "reading" the windows in the cam disk.