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done a fuel pressure test and whats the factory psi?

SB98UKexplorer

Well-Known Member
Joined
February 27, 2008
Messages
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City, State
UK croydon
Year, Model & Trim Level
98 explorer 4.0 SOHC v6
iv done a fuel pressure test on the rail of mine, it is at 41 psi (with vacum tube pulled off the fuel regulator), now with the fuel regulater plugged back in its at 25 psi.

iv checked my dads 2000 reg and it doenst have the fuel regulater, but test showed on his at 65 psi.

so what psi should mine be at?

iv recently replaced the fuel filter, and my dyno run showed i had fueling problem, so i guess im looking at the fuel pump dying?
 






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