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Fuel Pressure Regulator problem? - FIXED

daydreamer

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East Central Illinois
Year, Model & Trim Level
'94 XLT 4X4
I pulled the dual vacuum lines off of the EVR vacuum solenoid and gas poured out. I suspect the fuel pressure regulator is leaking gas into the vacuum lines. I have a "94 XLT with 236,000 miles. I have a couple of codes 137, 173 KOER (HO2S, L + R, sensor fault, always rich.) My question is when I replace the regulator do I have to lubricate the O-ring before installing? Can I just use a little bit of engine oil? Thanks.
 


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Blacksheep Josh

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do you need to know what the codes mean or do you allr eady know?

and give me a few minutes, i'll consult my haynes manual and see what it says
 




BrooklynBay

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fixxxer

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Ford TSP says to lubricate a set of new o-rings with a light oil, they say Ford spec ESE-M2C39 or equiv. Not to use silicone grease as it will clog the injectors.
 




daydreamer

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I went ahead and changed the fuel pressure regulator. Now I am getting no codes and the check engine light is off. :)
 




BrooklynBay

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410Fortune

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I use ATF or Vaseline to lube fuel system o rings

Nice work!
 




phntmfoot

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I went ahead and changed the fuel pressure regulator. Now I am getting no codes and the check engine light is off. :)


What problem were you experiencing to cause you to replace this? I have a fuel pump that runs continuously and its been replaced and has the same problem. I dont have a clue what to do from here but it wont start for me to take it somehwere to get looked at.
 




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