Chevy/GMC 6.2L and 6.5L Discussion of Chevy and GMC Trucks with 6.2L and 6.5L Diesel Engines

How To: Bleed 6.5L Fuel System

  #11  
Old 05-02-2018, 07:11 AM
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Better look into your lift pump function-have not run into air in the IP when there is a working lift pump.
 
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Old 05-02-2018, 08:49 PM
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Originally Posted by racer55 View Post
Better look into your lift pump function-have not run into air in the IP when there is a working lift pump.
. My lift pump is good, I had replaced #1 injector and relocated the ffm but got a little careless and hurried when purging the air from the new lines and filter. Was totally my own fault. Definitely won't let that happen again.
 
  #13  
Old 07-01-2018, 08:09 AM
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Where does the second hose coming off the fuel bleed valve go. Mine dry rotted and itís just falling apart. I thought it went to the fuel injection pump but I have know idea.
 
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Old 07-01-2018, 04:33 PM
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Originally Posted by Brandon Damato View Post
Where does the second hose coming off the fuel bleed valve go. Mine dry rotted and itís just falling apart. I thought it went to the fuel injection pump but I have know idea.

it just goes to open air. Mine was gone long ago. It just allows you to empty the fuel filter into a can or bucket when you drain out water or sediment.
 
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Old 07-01-2018, 07:08 PM
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The bleed valve gets bolted where I circled. The line that's pointing to the hose has diesel spitting out of it when the truck is running. I need to replace the hose with line cause it's dry rotted. The second picture I circled is what I think is the same hose but not positive.
 
  #16  
Old 07-07-2018, 10:46 PM
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The 2nd hose from the filter valve runs underneath the injection pump and hangs on a bracket on the thermostat housing. It has a small valve on top. So you bleed from the filter valve first, then the second valve hanging from the thermostat housing.
 
  #17  
Old 03-28-2019, 07:37 AM
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Default Same problem please need help on bleeding injector lines

Originally Posted by Daniel M. Kresha View Post
Fixed it! Had air in the IP. Injectors won't self bleed if there's air in the IP. Disconnected the return line and used a brake bleeder vacuum pump to suck out the air. Fired right up after that! Found that little trick on YouTube. Much later than sooner, figures.
Trying to use same technique with brake bleeder if I remove the return line do I hook up top filter housing or do I connect to return line and do I plug or keep open
 
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