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Fuel pressure spring

7K views 20 replies 11 participants last post by  matts05f250sd 
#1 ·
#5 ·
Where did you get the 60 psi spring? I just installed a fuel pressure gauge and at idle it sits at 54 psi and at fuel pedal on innovatives street tune it drops to almost 42 psi.
 
#7 ·
Are you being serious? what is good fuel pressure and what is bad?
 
#8 ·
Yes he is serious...I did it to my spring before the full fuel system and the air dog II
 
#10 ·
Per Ford's specs, minimum fuel pressure at WOT under load is 45psi. I have heard that anything over 70psi is bad on the injector o-rings in the 6.0
 
#14 ·
If I'm sitting at 50psi right now would it really be worth it to add more pressure via stretching the spring?
 
#19 ·
Ya it doesn't budge at all.
 
#20 ·
When my stock pump was on the way out my fuel pressure was dropping to 30 psi when the converter would lock even with the spring and the Banjo mod...Now with the AD II it wont budge off of 58. :evil
 
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