Engine & Gearbox Acceleration Rattle update plus video

Discussion in '7th Generation (2003-2008) [Acura TSX]' started by Bear1, Wednesday 22nd Apr, 2015.

  1. Bear1 Club Member ★ ☆ ☆ ☆ ☆

    Ireland Kevin Galway
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    Hi again,

    I thought I could try and just live with the noise after 3 mechanics couldn't figure out what was causing the rattle.
    So this morning I decided to record the noise while I was on my way to work.



    Hopefully everyone can hear it but it happens after 10 seconds more or less. You will hear a metally banging noise.
    can anyone think of anything that his could be? Or has anyone ever had a similar noise?
    Desperate now.
     
  2. Nels Moderator Staff Team

    Please add your car to the Club Garage so we know what we're dealing with.
     
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  3. Bear1 Club Member ★ ☆ ☆ ☆ ☆

    Ireland Kevin Galway
    67
    6
    Apologies, It's a 2.2 CDTI 2004 Accord Tourer.
    Don't have a picture of it at the moment but I will add one tomorrow.
     
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  4. Bear1 Club Member ★ ☆ ☆ ☆ ☆

    Ireland Kevin Galway
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    6
  5. DeviateDefiant Co-Founder Staff Team

    United Kingdom Leo Northants
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    The noise is really hard to distinguish because of the echo for me, I honestly don't know what to make of it as it stands. What conditions does it present itself under?
     
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  6. Bear1 Club Member ★ ☆ ☆ ☆ ☆

    Ireland Kevin Galway
    67
    6
    Yeah I was afraid of that, I was able to hear it as I'm so used to it.
    Unfortunately it's the quitest way to record it without outside traffic. You hear (hopefully) the noise towards the end of the video.
    No conditions, cold, warm, snow, rain it will always do the same.
    In first gear there is no noise and it goes fine, slap it into 2nd onwards and there it is. Now, it is very smokey (black smoke) and also what I've noticed is that in 5th gear after a certain speed the noise goes away.
    I've had the exhaust manifold checked out and it's fine, the car checked incase it was banging and it was fine.
    The chains have been replaced and 3 out of the 4 injectors were broken during the job.
    Coincidentaly the noise started just after I got the car back from the chain job.
    At my wits end.
     
  7. Zebster Expert Advisor ★ ★ ★ ★ ★

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    Have you complained to the garage who did the chains? What was their response?
     
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  8. Bear1 Club Member ★ ☆ ☆ ☆ ☆

    Ireland Kevin Galway
    67
    6
    They said everything was done properly, it was a Honda specialist. 3 mechanics later and none the wiser.
     
  9. Zebster Expert Advisor ★ ★ ★ ★ ★

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    Do you have the equivalent of our Trading Standards organisation in the ROI?
     
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  10. Bear1 Club Member ★ ☆ ☆ ☆ ☆

    Ireland Kevin Galway
    67
    6
    We do indeed, but the job was done abroad as I was working abroad at the time and it was cheaper to have it fixed there then in the ROI.
    So that avenue is closed to me, my worst fear is big end but the symptoms don't add up.
    So, my only reasoning is something to do with the injectors.. rattle only during acceleration and stops after a certain speed.
     
  11. Zebster Expert Advisor ★ ★ ★ ★ ★

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    I must admit that injectors were my first thought, but I seem to remember that they had been correctly coded to the ECU? Where did the 3 replacements come from?
     
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  12. Bear1 Club Member ★ ☆ ☆ ☆ ☆

    Ireland Kevin Galway
    67
    6
    They came from a donor car. I mean the reason why injectors comes to mind is that I just can't see what the chain could possibly be hitting off to cause the noise and why only at certain rpms, speed and gears. The noise would be constant.
    The injectors however I can't understand what could cause one or any of them to create rattling noises?
    The reasoning I also have is that when idling the injectors wouldn't be under much pressure which is why the car sounds normal...
    So bloody tricky.
     
  13. Zebster Expert Advisor ★ ★ ★ ★ ★

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    If the injectors were misfuelling then the 'rattling' could be a form of diesel 'knock'. If you can get it connected up to an HDS then there is a test routine for the injector deliveries, specifically the degree to which the ECU is compensating for minor misfuelling, BUT there is only a small range that the ECU can adjust for. So if the corrections are off-scale then there will be a misfuelling issue which would cause knocking/rattling noises, especially under load.
     
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  14. Bear1 Club Member ★ ☆ ☆ ☆ ☆

    Ireland Kevin Galway
    67
    6
    Hmm, which could also cause heavy black smoke under load as well right?
    Sorry for the questions, but why would the injectors knock? Is it a fail safe way for them to tell you they aren't functioning properly?
     
  15. Zebster Expert Advisor ★ ★ ★ ★ ★

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    It isn't the injectors knocking, the noise comes from the resulting non-ideal combustion process! And yes, this would often also lead to excessive smoking.
     
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  16. Bear1 Club Member ★ ☆ ☆ ☆ ☆

    Ireland Kevin Galway
    67
    6
    Ok, I'll get it into an injector specialist and have them tested. I'm nearly hoping that the injectors are faulty just so I know that that's exactly the problem
     
  17. Zebster Expert Advisor ★ ★ ★ ★ ★

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    I think having them tested by a specialist is probably a good move!
     
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  18. Bear1 Club Member ★ ☆ ☆ ☆ ☆

    Ireland Kevin Galway
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    6
    Thanks for your help, I'll keep the thread updated
     
  19. ArcticFire-Account Closed Banned Getting Started

    Scotland Graham Scotland
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    If you want to check if it's diesel knock or not it's easy to replicate such by buying some diesel EGR spray cleaner and removing your air filter and spraying into the intake tube towards the turbo. If the noise is the same then at least you then know.
     
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  20. Bear1 Club Member ★ ☆ ☆ ☆ ☆

    Ireland Kevin Galway
    67
    6
    Good idea, I've done a bit of youtubing and googling and the noises seem very very similar.