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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

Fuel Pressure Regulator Blue spring problems

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Old Dec 21, 2014 | 12:20 PM
  #16  
Pat Taugher's Avatar
Pat Taugher
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So little update.... i took apart everything, found that little oring and put a little assembly lube on it... and put it all together.... it could be just a placebo effect, but with the oring i noticed the truck cranks over faster... idk if it is related or not. but i got the oring in... and put everything back together
 
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Old Dec 21, 2014 | 01:44 PM
  #17  
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mustang_309
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From: South Weber, Utah
Originally Posted by Pat Taugher
So little update.... i took apart everything, found that little oring and put a little assembly lube on it... and put it all together.... it could be just a placebo effect, but with the oring i noticed the truck cranks over faster... idk if it is related or not. but i got the oring in... and put everything back together
Good deal and it will add piece of mind that you are not starving the injectors of the fuel pressure they need. When I helped a friend of mine do his blue spring I didn't install that oring and I could hear the fuel by-passing the black bushing, almost like a whirring noise, took it apart and installed the oring and whirring was gone. One way to look at fuel pressure is the fuel inside the injector acts like a shock absorber of sorts and if the pressure gets too low it can allow over drive of the injector allowing the pintle to contact the body of the injector causing damage.
 
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Old Dec 21, 2014 | 01:54 PM
  #18  
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I have heard stories about bending the spring... When I pulled it off it was fine and think it put it back just as fine... But how would I know for sure?
 
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Old Dec 21, 2014 | 02:04 PM
  #19  
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mustang_309
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From: South Weber, Utah
Originally Posted by Pat Taugher
I have heard stories about bending the spring... When I pulled it off it was fine and think it put it back just as fine... But how would I know for sure?
I would think low fuel pressure and you would likely hear fuel by-passing the regulator with the key on and the fuel pump running. But im sure if you didn't bend it the first time I am sure you didn't bend it this time.
 
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