What causes P0087 Duramax?

What causes P0087 Duramax?

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.

What is normal fuel rail pressure on a Duramax?

1,500 psi
For starting a Duramax, you’ll need a minimum of 1,500 psi fuel pressure at the rail while cranking and at idle a minimum of 5,000 psi.

What is the fuel rail pressure on a 6.6 Duramax?

Use common sense safety practices when servicing any diesel system: While maximum control oil pressure on a Power Stroke can reach nearly 4,000 psi, the Duramax fuel system is pressure-relieved at a blistering 27,550 psi.

How do I fix the code p1093?

Common fixes for p1093 engine code in Duramax

  1. Priming the fuel system.
  2. Replacing fuel injector nozzle or nozzles.
  3. Using diesel adaptive to clear injector stiction.
  4. Draining fuel water separator.
  5. Replacing diesel within a tank.
  6. Checking engine computer injector timing and spray patterns.

How do I fix code p1093?

How do you fix P0087?

What repairs can fix the P0087 code?

  1. Replacing the fuel filter or screen.
  2. Replacing kinked fuel lines.
  3. Removing and replacing the fuel pump.
  4. Replacing a faulty fuel pressure sensor.

What should lb7 fuel rail pressure be?

Note that the fuel rail pressure is at 24,053 psi. As stated previously, the fuel pressure with the Ignition relay unplugged needs to be a minimum of 2500 to 3500 psi during cranking for the return rate test results to be valid.

How do I know if my fuel pressure regulator is bad on my Duramax?

The symptoms of a bad regulator usually manifest as a surge when idling, though sometimes the surge can happen at speed while driving. Other symptoms include power loss on acceleration or hard starting. Sometimes it can get bad enough to force the truck into limp mode with a low rail pressure warning.

How do I know if my fuel rail sensor is bad?

Following are the main symptoms you would observe when the fuel rail pressure sensor goes bad:

  1. Poor Fuel Mileage.
  2. Sluggish Acceleration.
  3. Problems in Starting.
  4. Stalling.
  5. Engine Check Light.
  6. Unburnt Fuel in Exhaust.