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  1. #1

    low high rpm gtx di

    i am experiencing low high rpm, max 5800 when running my 2002 gtx di. but when i put the reverser in neutral and give it full throttlle it will go to 7100 rpm. i then put in gear and go and max 5800.

    i pulled the water regulator apart and notice the bellows seem weak, they look like a backward plunger, is this correct? rave valves are clean, everything thing else in order.

    mike


  2. #2
    Myself's Avatar
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    When you put it in neutral it's not under a load. How many hours on it?

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  4. #4
    Myself's Avatar
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    I would first pull and replace both fuel filters inside the fuel tank and flush/replace the inline one outside the tank too. I'd bet it's never been done.

  5. #5
    i have done this. fuel pressure is good because it does reach proper rpm in nueutral,
    what is the function of the water regulator? is it part of the rave valve system?

  6. #6
    Myself's Avatar
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    The water regulator works off of exhaust pressure like the RAVEs but it controls water flow into the exhaust system. Take it apart and inspect the spring and bellows.

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