2004 jeep tj question - JeepForum.com
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post #1 of 4 Old 08-20-2017, 11:04 AM Thread Starter
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2004 jeep tj question

I need some input... in the fuel rail for a 2004 TJ I would like to know if anyone can identify the following part. ( it looks like it snaps in to the fuel rail and looks like it might bean pressure relief valve or something like that)... Can Anyone identify this part in the fuel rail? Pics attached...

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post #2 of 4 Old 08-21-2017, 05:33 AM
Jonny Jeep
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This is from the 04 TJ FSM...
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04 TJ Fuel Rail 6 cyl.jpg  
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post #3 of 4 Old 08-21-2017, 09:12 AM
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On my phone app, I see no highlighted part. I do know some rails had a Schrader valve to check rail pressure, and the damper feature acts like a hammer arrester used in your house's water supply lines.
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post #4 of 4 Old 08-22-2017, 04:24 PM
Jonny Jeep
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The part in the middle of the fuel rail is a fuel damper. Here's the text from the FSM and the picture on it's own which might make it more visible on a mobile...


The fuel rail is mounted to the intake manifold (Fig. 8). It is used to mount the fuel injectors to the engine. On the 4.0L 6–cylinder engine, a fuel damper is located near the center of the fuel rail (Fig. 8).


The fuel injector rail supplies the necessary fuel to each individual fuel injector. The fuel damper is used only to help control fuel pressure pulsations. These pulsations are the result of the firing of the fuel injectors. It is not used as a fuel pressure regulator. The fuel pressure regulator is not mounted to the fuel rail on any engine. It is located on the fuel tank mounted fuel pump module.
Refer to Fuel Filter/Fuel Pressure Regulator for information.

The fuel rail is not repairable.

The fuel damper is not serviced separately.
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04 TJ Fuel Rail Fuel Damper 6 cyl.jpg  
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