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testing fuel pressure


mike0179

10+ Year Member

Joined
Sep 22, 2007
Messages
5
Points
3,001
Vehicle Year
1999
Transmission
Automatic
Hi everyone!

can somebody tell what the pressure should be when the key is on engine off, and what it should be while running on a 99' 4.0 ranger.
thanks,

mike
 
fuel pressure should be at least 30lbs with the engine running. not sure what it should be when off...i would imagine pressure would bleed down to zero relatively quickly.
 

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