mercury moutaineer

1998 MERCURY MOUNTAINEER
159 MILES • 6 CYL • 2WD • AUTOMATIC
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KRISTIMP2003
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  • 2 POSTS
What is the fule pressure requirement for a 1998 mercury moutaineer 4.0 v6
Nov 30, 2010 at 7:32 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
30 to 45 psi with the key on and the engine off.
Nov 30, 2010 at 7:35 PM
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KRISTIMP2003
  • MEMBER
  • 2 POSTS
what about with it running?
Nov 30, 2010 at 7:44 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
That is the only listing mitchell lists. Based on that, I would recommend the same with the engine running. With the engine running, remove the vacuum hoses to the regulator. Pressure should increase. Also, make sure there is no fuel in the vacuum hose from the regulator. If there is, replace the regulator.
Dec 1, 2010 at 4:03 PM
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