What is the fule pressure requirement for a 1998 mercury moutaineer 4.0 v6
Wednesday, December 1st, 2010 AT 3:32 AM
3 Replies
JACOBANDNICKOLAS
MECHANIC
109,867 POSTS
30 to 45 psi with the key on and the engine off.
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Wednesday, December 1st, 2010 AT 3:35 AM
KRISTIMP2003
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What about with it running?
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Wednesday, December 1st, 2010 AT 3:44 AM
JACOBANDNICKOLAS
MECHANIC
109,867 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.