The codes pop up on a Duramax when there’s low fuel rail pressure: P0087 or P1093. Usually, the truck is performing at its maximum and unable to keep up with what’s commanded. The common rail fuel system operates at 28 – 29,000 psi and needs to drop only 2,200 psi to trigger the trouble code.
Low rail pressure could be caused by a restricted fuel filter, air in the fuel, a bad pressure relief valve, excessive return fuel from the injectors or a worn CP3 pump. The least likely cause would be a fuel rail pressure sensor.
How do you prime LLY Duramax after running out of fuel?
Prime the fuel system by turning the ignition on (Run position) for 30 seconds, but do not start the engine. This allows the pump to prime the system. Turn the ignition off, and then crank it for 15 seconds. If it does not start, repeat the first task and this one until it starts (cycle the key).
What is code P1093 on a Duramax? – Related Questions
Do I need to let my Duramax warm up before driving?
Over fifty degrees will only require one or two minutes to warm up. This warm up time is necessary to increase the temperature of the combustion chamber. A diesel truck will not fully reach operating temperature until after you have started driving.
Does running out of diesel damage the engine?
Running Out of Diesel
When a diesel engine draws in air instead of fuel, both the fuel pump and fuel injectors can become damaged. This is because diesel fuel is used to lubricate the moving parts these components have.
How do you bleed a fuel system on a LLY Duramax?
How do you bleed a diesel after running out of fuel?
Do you have to prime a diesel after running out of fuel?
When a diesel engine runs out of fuel, it sucks air into the fuel system. Even if you add fuel to the fuel tank, a diesel engine will probably not start while there is air in the fuel system. To restart the engine after running out of diesel, you’ll need to prime the system.
How do you flash a Duramax back to stock?
This article will walk you through flashing your 2011-2016 Duramax
Turn the key two clicks forward to the Run position (engine off)
Plug the SPADE into your truck using the OBD cable.
Toggle down to Tuning Tool.
Toggle to Program Full.
Toggle to the Stock File and press okay.
Can you clean an EGR valve on a Duramax diesel?
Cleaning the EGR manifold takes about 15 minutes using a screwdriver, wire brush and lots of brake cleaner. If the EGR valve needs to replaced, it’s most likely time to clean the EGR cooler. “A clogged EGR cooler will trip both EGR and MAF sensor codes, affecting performance.
Start the re-learn by making at least six sets of light throttle upshifts through all the gears, then make another six sets at 1/3, 1/2 and 3/4 throttle. Downshift the same way by starting at light throttle and working up to full throttle.
How do I make my stock Duramax turbo louder?
How do I know if my Duramax turbo is bad?
Five Signs of Turbocharger Failure
Sluggish Acceleration. As the turbocharger is designed to provide extra power to the engine, when working correctly, acceleration should feel snappy.
Guzzling Oil.
Increased Exhaust Emissions.
Engine Management Light/Check Engine Light.
Whining Noises.
How much boost does a stock Duramax have?
The factory map sensor which electronically measures boost on a 2001-2004.5 trucks only reads to 22-24 psi, 2006-2016 MAP sensors read to 37 psi. If you want to read boost numbers higher you’ll need an aftermarket gauge.
What makes diesel trucks whistle?
The whistling in a diesel comes from the turbocharger. The turbocharger spinning at high speeds causes the air to pulse at a high frequency and creates a whistle. There are a few other things that can cause a whistle such as an exhaust leak and alterations to mimic or make the whistle louder.
Why are turbo diesels so loud?
Answer: The clatter results from the combustion of diesel fuel inside the engine. In a diesel, the fuel is ignited by high pressure and temperature inside the cylinder, rather than by a spark plug. The clatter is the result of fuel not burning as evenly as in a gasoline engine, creating a knock.
However, if you start to hear a loud, whining noise – a bit like a dentist’s drill or police siren – it’s a potential symptom of turbo failure. As the fault gets more serious, the noise will get worse. If you notice a whining from your engine, you should get a professional mechanic to have a look at your car.