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Thread: Hissing Injectiors - 2000 S3 APY

  1. #1
    mark_S3's Avatar
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    Hissing Injectiors - 2000 S3 APY

    Good Evening people.....

    Changed my fuel filter tonight which was a pain to get off. I even had to snap the juiblie clip but a few tie straps sorted that out.....

    Anyway even after a long idle and a quick run, there is a hissing noise coming from my injectors. I presume it's trapped air being released from the system but has anyone ever had this problem?
    It's not constant but comes and goes and stops once revved.
    No running issues and drives ok. And also no warning lights.
    Is it bursts of trapped air coming through or is it something else?
    ***2000 Audi S3 8L APY***
    * Milltek CATback * Milltek 200 Supercell Sports CAT * SuperChips SPS Stage 1 Remap * Forge 008p *
    * 18" Audi TT 240 Sports Alloys in Gunmetal Grey * Pagid Discs with BD Predator Pads *
    * Badger5 v2.2 TIP, JR Filter with Heatshield * N249 Delete * N112 Bypass *
    * PowerFlex ARB Bushes * TFSI Coilpacks * Saikuo Michi S3-OCC *
    * PowerFlex Rear Engine Mount Bushes *


    [IMG][/IMG]

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  3. #2
    mark_S3's Avatar
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    And BTW the old filter had a date stamp from Oct 2000, so I presume it's been on for a very long time.
    The new filter had a date stamp from June/July 2012. Like any filter I replace, I always write on the filter with a Tipex pen stating date and mileage for future reference.
    ***2000 Audi S3 8L APY***
    * Milltek CATback * Milltek 200 Supercell Sports CAT * SuperChips SPS Stage 1 Remap * Forge 008p *
    * 18" Audi TT 240 Sports Alloys in Gunmetal Grey * Pagid Discs with BD Predator Pads *
    * Badger5 v2.2 TIP, JR Filter with Heatshield * N249 Delete * N112 Bypass *
    * PowerFlex ARB Bushes * TFSI Coilpacks * Saikuo Michi S3-OCC *
    * PowerFlex Rear Engine Mount Bushes *


    [IMG][/IMG]

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    mark_S3's Avatar
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    Anyone have an answer?
    ***2000 Audi S3 8L APY***
    * Milltek CATback * Milltek 200 Supercell Sports CAT * SuperChips SPS Stage 1 Remap * Forge 008p *
    * 18" Audi TT 240 Sports Alloys in Gunmetal Grey * Pagid Discs with BD Predator Pads *
    * Badger5 v2.2 TIP, JR Filter with Heatshield * N249 Delete * N112 Bypass *
    * PowerFlex ARB Bushes * TFSI Coilpacks * Saikuo Michi S3-OCC *
    * PowerFlex Rear Engine Mount Bushes *


    [IMG][/IMG]

  5. #4
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    It won't be trapped air.It'll be a vacuum leak.

    I bet you have smeg around the base of your injectors from leaks. Change the seals

  6. #5
    mark_S3's Avatar
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    Just abit puzzled thats all as the noise wasn't there before the filter change. By the words of smeg, I presume it's dirty

    How easy are they to change the seals? I'll look for a guide for How to when I'm back in front of my laptop.
    ***2000 Audi S3 8L APY***
    * Milltek CATback * Milltek 200 Supercell Sports CAT * SuperChips SPS Stage 1 Remap * Forge 008p *
    * 18" Audi TT 240 Sports Alloys in Gunmetal Grey * Pagid Discs with BD Predator Pads *
    * Badger5 v2.2 TIP, JR Filter with Heatshield * N249 Delete * N112 Bypass *
    * PowerFlex ARB Bushes * TFSI Coilpacks * Saikuo Michi S3-OCC *
    * PowerFlex Rear Engine Mount Bushes *


    [IMG][/IMG]

  7. #6
    Broken Byzan's Avatar
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    But did you really ever listen that closely before? LOL

    It could be increased pressure due to a previosly blocked filter.

  8. #7
    mark_S3's Avatar
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    Quote Originally Posted by Byzan Pics View Post
    But did you really ever listen that closely before? LOL

    It could be increased pressure due to a previosly blocked filter.
    No not really, but definatley wasnt making the noises like it was now. Its like a pausable hissing noise which is on/off every few seconds. Coming from area around the two injectors on the right side as looking from the front of the car.
    Had the car running for ten mins or so after filter change, then a quick 2-3miles drive but noise was still there.

    Drives fine, with no issues...

    Tbh the filter could of been on the car for 13 years or less, and read a few posts on here that they had the same. Car is stacked with Service history at main dealers/Specialists and I'm surprised its was on for that long.

    Think some new seals and if i can buy or borrow one a good clean of the injectors in a Ultrasonic bath.

    Cheers for the help pal

  9. #8
    RIP S3dave

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    *maybe* its got actual fuel flow and the noise would have been normal fpr bypassing the fuel..
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    Not the best video but you can hear the on/off 'hissing'
    ***2000 Audi S3 8L APY***
    * Milltek CATback * Milltek 200 Supercell Sports CAT * SuperChips SPS Stage 1 Remap * Forge 008p *
    * 18" Audi TT 240 Sports Alloys in Gunmetal Grey * Pagid Discs with BD Predator Pads *
    * Badger5 v2.2 TIP, JR Filter with Heatshield * N249 Delete * N112 Bypass *
    * PowerFlex ARB Bushes * TFSI Coilpacks * Saikuo Michi S3-OCC *
    * PowerFlex Rear Engine Mount Bushes *


    [IMG][/IMG]

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    mark_S3's Avatar
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    Quote Originally Posted by badger5 View Post
    *maybe* its got actual fuel flow and the noise would have been normal fpr bypassing the fuel..
    Bill, you might have to explain a little further for me.

    Apologies but not really techincal minded regarding this matter. Its a first for me....

    Cheers

  12. #11
    RIP S3dave

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    yep, thats a weird not normal sound..
    pop off the fpr and see if its got debris on its filter mesh.
    col_s3 likes this.
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    bill@badger5.co.uk
    **NEW** Badger5 Section CLICK here>> http://www.audi-sport.net/vb/213-badger-5/

  13. #12
    mark_S3's Avatar
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    Quote Originally Posted by badger5:1936164
    yep, thats a weird not normal sound..
    pop off the fpr and see if its got debris on its filter mesh.
    Cheers pal.... Will have a look!
    ***2000 Audi S3 8L APY***
    * Milltek CATback * Milltek 200 Supercell Sports CAT * SuperChips SPS Stage 1 Remap * Forge 008p *
    * 18" Audi TT 240 Sports Alloys in Gunmetal Grey * Pagid Discs with BD Predator Pads *
    * Badger5 v2.2 TIP, JR Filter with Heatshield * N249 Delete * N112 Bypass *
    * PowerFlex ARB Bushes * TFSI Coilpacks * Saikuo Michi S3-OCC *
    * PowerFlex Rear Engine Mount Bushes *


    [IMG][/IMG]

 

 

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