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John Deere 455 Diesel Fuel Problem?


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#1 JD DANNELS OFFLINE  

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Posted September 07, 2014 - 08:59 PM

Went to a family reunion today. Cousin was saying he lost the fuel filter(fell off) and after fixing it he can not get the fuel lines purged of air. Am I correct in my understanding that that haS A PRIMING PUMP IN THE TANK? I understand that this is suppose to be a self priming system.
I found a post on the net where a guy was having a simular problem and traced it to a loose fuse to the electric pump.

#2 Texas Deere and Horse OFFLINE  

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Posted September 07, 2014 - 09:45 PM

I have never worked on a 455, but on the 330-332, I use a little bit of compressed air in the tank with a wag to block off the filler neck and take the purge screw loose on the top of the filter housing. Just a couple PSI of air will push the fuel all the way to the pump.

 

 

I MUST ADD THIS !!! DO NOT USE COMPRESSED OXYGEN !!


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#3 JDBrian OFFLINE  

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Posted September 08, 2014 - 05:47 AM

I thought those systems were "self priming" in most circumstances at least. Maybe not if the filter fell off and the engine pulled air into the system.


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#4 Auburn David OFFLINE  

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Posted September 08, 2014 - 09:33 AM

In this case I would think you will need to bleed the system at the injectors...after priming the system as suggested by RED Wild Hogs, Horses & Deeres


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#5 1978murray OFFLINE  

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Posted September 08, 2014 - 01:03 PM

I would find the bleeders on the pump and crack them, crank until no bubbles come out. then tighten them back up, then crack the injectors and bleed them also, shut them once no air is present.  then it hould run 


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#6 WNYTractorTinkerer OFFLINE  

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Posted September 08, 2014 - 02:05 PM

I would find the bleeders on the pump and crack them, crank until no bubbles come out. then tighten them back up, then crack the injectors and bleed them also, shut them once no air is present.  then it hould run 

You should not have to bleed anything as these are self-bleeding.  Fuel quality?  Filter installed improperly?  Crack an injector and crank to look for air bubbles if no help..



#7 1978murray OFFLINE  

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Posted September 08, 2014 - 07:38 PM

These self primimg systems dont aways get all the air out. They r made to get little bit of air out. Such as if you changed your fuel filter and you didnt prefill the filter, and a little are got trapped. Now if you open the fuel system and sucked air into it while running it will not get all the air out. Im a heavy diesel mechanic and even on the big engines with self priming systems they always need help bleeding air if the system is majorly opened
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