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Thread: High pitch noise coming from Fuel Block

  1. 13th April 2016, 12:29 PM #1
    Sharp
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    High pitch noise coming from Fuel Block

    G'day fellas and gals,

    My fuel pressure regulator was leaking for months on my TD5, i finally got around to order a new FPR and O ring kit from Spain.

    I have installed the new FPR, pipe O rings and new gasket. When i first went to prime it there was a high pitch noise, like fuel flowing through a small point. I though it was just air being pushed out of the line, so i thought nothing of it and fired here up. She started first crank with no fuss.

    I went for a 20 minute drive and noticed a leak from the block After checking all unions and joins i figured it must be the gasket, so i went and got another one, and replaced it.

    At this point i thought the noise i heard may be because of the leak, due to it not being able to build up pressure.

    After installing the new gasket i still have the same noise

    The car runs and starts fine

    Any thoughts?
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  2. 13th April 2016, 12:31 PM #2
    Sharp
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    Here is the sound. Although it sounds like blowing air, the noise is coming from the fuel block i believe.

    Could it perhaps be a leaking injector seal, and the regulator is now working?
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  3. 13th April 2016, 12:36 PM #3
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    Duarte19
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    Quote Originally Posted by Sharp View Post
    Here is the sound.

    Could it perhaps be a leaking injector seal, and the regulator is now working?

    worth trying an air bleed cycle, key on press acc peddle 5 times, you will hear the pump run a few times
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  4. 13th April 2016, 12:38 PM #4
    Sharp
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    Quote Originally Posted by Duarte19 View Post
    worth trying an air bleed cycle, key on press acc peddle 5 times, you will hear the pump run a few times
    Thanks Duarte19,

    I did use this method to bleed/prime the system before starting.

    Also it there was air in the system, would there not be issues with running?
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  5. 13th April 2016, 06:37 PM #5
    Sharp
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    Another possibility is that the fuel block could be fractured
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