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97 ranger 4.0L V6 running lean
so I've been thinking of putting an adjustable fuel pressure regulator to fix this "too lean" issue and for performance. I took a code scanner and came up with P0171/P0174 which means too lean. I've done cold air intake, throttle body, plus4 spark plugs. what I've read and learned is that I...- SteadyMobbin13
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- Replies: 9
- Forum: 4.0 Liter Forum