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Old 04-05-2014
wayne225's Avatar
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I am: Matthew Ritchie
Join Date: Jun 2013
Location: Ashland, Kentucky
Vehicle: 1999 Ford Ranger
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Engine: 3.0
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fuel injector replacement

I need to replace a fuel injector on my 99 Ranger 3.0 it is the #6 injector. What is the best way to replace it. Also can you give me the torque sequence and torque spec. Thank you in advance.
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Old 04-05-2014
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I am: Ron Dean
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There is really nothing with a specific torque or pattern in what you are doing.

You just need to remove the upper intake, 6 bolts
Release fuel rail pressure via the schrader valve
Remove injector wires
Then remove the 4 fuel rail bolts.
The injectors are just clamped between lower intake and fuel rail by those 4 bolts, they have "O" rings at the top and bottom to seal them, keep track of those, they stick to one surface or the other, put a light coat of motor oil on them when reinstalling.

If you want a torque spec use 10ft/lb, so snug
For the upper intake start at the center and work to outside, you can reuse the gasket if it comes off in one piece
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Old 04-05-2014
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I am: david fowler
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with that old of an engine I WOULD replace all 6 of them that are FLOW matched
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