This is topic 2004 mustang gt sohc stock fuel pressure? in forum Tech Talk at Northern California Ford Owners  .


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Posted by Mr.10psi (Member # 11062) on :
 
Does anyone know what the stock fuel pressure on a 2004 mustang gt is? I am using an external gauge and am registering only 28 psi. Thanks cafords
 
Posted by SLOWSN95 (Member # 8269) on :
 
Pretty sure it should be 39lbs across the board. Somebody correct me if I'm wrong.
 
Posted by SwEeT03Gt (Member # 10283) on :
 
depending on vac, the pressure should fluctuate between 27 and 39.

formula is 39-(vac/2)= rail pressure
 
Posted by Mr.10psi (Member # 11062) on :
 
quote:
Originally posted by SwEeT03Gt:
depending on vac, the pressure should fluctuate between 27 and 39.

formula is 39-(vac/2)= rail pressure
wow, thats a wide range. I am talking idle fuel pressure with vacuum hooked up.
 
Posted by BTLD GT (Member # 5229) on :
 
there is not a set idle pressure due to the fact of the returnless style fuel system. the pressure is regulated by the fuel pump driver module. what issues are u experiencing?

daniel
 




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