Fuel bleed after filter change QSC

[Philip]

On a QSC after an on engine filter change I have heard two ways to bleed fuel and prime engine.

 

1. Open bleed screw on top,of filter housing and cycle key until fuel comes out. Reference http://www.sbmar.com/articles/how-to-bleed-fuel-on-a-cummins-qsl-9-qsc-8-3/

 

2. Simply cycle key on and off a few time to allow the pump to push fuel through.

 

So what’s the proper way?

Phil

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brian law

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[Tony Athens]

It’s not what is proper or not proper. It’s as matter of getting it to bleed easily..

 

1) Changing just the on-engine filter–Loosen just the outlet screw to allow air to escape thru the threads.

 

2) If changing  filters OFF the engine, then remove the IN-Screw on that filter head.

 

By far the easiest way for both is to install a “squeeze bulb” priming system..  1-3 minutes for all vs. 15-30 minutes the “Cummins Book way”

 

Tony

 

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