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Fuel filter change with push-button start

Penndel Zeke

By Penndel Zeke
in 6.6L Duramax Diesel (L5P)

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Penndel Zeke New Member

Penndel Zeke

Posted
Posted

I didn’t see any mention of how to cycle the fuel pump after a fuel filter change when you have the push-button (keyless)start. Will pushing the button without depressing the brake pedal cycle it?  If the brake pedal is depressed, it will try to start. 

Pnoman Enthusiast

Pnoman

Posted
Posted

Yes hold the start button down for a few seconds and you’ll hear the pump cycle, do this a few times.

Do not press on the brake that would cause  the engine to want to start.

dab5577 Enthusiast

dab5577

Posted
Posted

One thing I didn’t realize until I changed mine on this new setup - there’s no bleeder and it may take a few starts/running it a bit to get to the point it starts immediately like normal. First change I was wondering if I did something wrong cause it cranked for a bit before starting, but it went away after the first drive. Just FYI if you notice the same.


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redwngr Senior Enthusiast

redwngr

Posted
Posted (edited)

It should prime by when start button is pushed, but foot not on brake. 

 

L5P supplement says let it prime (run the lift pump) for something like 30 seconds -- then try to start. 

 

Edited by redwngr
  • 2 weeks later...
Rguerra Enthusiast

Rguerra

Posted
Posted

You can push the Start engine button on the dash until you hear a chime and the light turns green on the button.  This will engage the fuel pump and prime the fuel housing.  I would do this about 3x before trying to start the truck after a fuel filter change.  Just remember to not press the brake otherwise it will attempt to start the truck.

Dave mags Enthusiast

Dave mags

Posted
Posted

Happy new Year !

A little off topic but has anyone attempted to drain fuel from the fuel filter housing ?

I did a little research and got the torx bit and a inch pound torque wrench 

I took out the plug and nothing came out.

Does anyone have any experience in this ??

I was going  to just drop the filter and replace it r but I only have 12K on it 

Thanks

  • 1 year later...
Megan Mathes New Member

Megan Mathes

Posted
Posted

You only need to loosen the torx screw a few turns, then as you loosen the housing with the 36mm 6 sided socket it will drain from the bleed port on the torx screw ( need air to enter the top of the housing as it is loosened ) 

  • 4 months later...
redwngr Senior Enthusiast

redwngr

Posted
Posted

Priming is covered in the diesel supplement.

 

Priming the Fuel System

 

There is an electric priming pump that will bring fuel to the engine and eliminate air in the fuel lines.

 

To prime the engine:

 

1. Correct any condition that caused the loss of prime.

 

2. Turn the ignition on for 30 seconds. (for pb start do not put foot on brake, just push button)

Do not start the engine.

The fuel pump will start priming.

 

3. Turn the ignition off, then back on, and crank the engine for 15 seconds.

 

4. If the engine does not start, repeat
Steps 2 and 3 until the engine starts.
If the engine does not start after repeating Steps 2 and 3 three times, turn the ignition off for 60 seconds.

 

5. Repeat the above steps until the engine starts.

 

6. If the engine starts, but does not run smoothly, increase the engine speed slightly.

 

7. If the engine starts and runs but stalls again, turn the ignition off for 60 seconds.

 

8. When the engine starts, let it idle for a few minutes and check the filter for any leaks.

  • 2 years later...

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