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  1. #1
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    306 hdi ticking/tapping noise

    just wounded if an1 could help, when i accelerate and get to the top of my revs, roughly 3,200 the car develops a ticking/tapping noise from the engine. It doesn't do it on idle if i rev only when driving? any1 any ideas?

    Edit: i have noticed today that actually the noise develops from around 2,400 revs??
    Click here to enlarge
    ---306 hdi---Stage 2 165bhp 270lb/ft, De-Cat, De-EGR, Induction Kit, FMIC
    98% of people hate Jeremy Clarkson. If you are part of the 2% which doesn't, put this in your sig!

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  2. #2
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    Re: 306 hdi ticking/tapping noise

    at 32,000 revs the conrods are stretching so far they are hitting the head, never mind the valves that don't properly close anymore Click here to enlarge

    seriously, I think it's because the injection system starts using 1 contimous injection around that time, no more pre-ignition....
    cubic inches, there's no substitute...

  3. #3
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    Re: 306 hdi ticking/tapping noise

    lol sorry i meant 3200 i haven't a clue wot u mean lol could u please explain
    Click here to enlarge
    ---306 hdi---Stage 2 165bhp 270lb/ft, De-Cat, De-EGR, Induction Kit, FMIC
    98% of people hate Jeremy Clarkson. If you are part of the 2% which doesn't, put this in your sig!

    Straights Are For Fast Cars, Corners Are For Fast Drivers... Click here to enlarge Click here to enlarge
    http://en-gb.facebook.com/people/Tom-Baxter/692255268

  4. #4
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    Re: 306 hdi ticking/tapping noise

    well, at low loads and low rpm, the hdi system does multiple injections per cycle, to stop the pinking noise you're describing...

    when the injection quantity gets to large to be injected in 2 times (high load and/or high rpm) the system drops the first injection and does only one bigger one...

    also, around 3000 rpm the egr-valve gets shut no matter what the loading on the engine is... this has an impact on the sound aswell...
    cubic inches, there's no substitute...

  5. #5
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    Re: 306 hdi ticking/tapping noise

    o rite i understand, so its normal are you saying? it just doesn't sound like it should be like that. I have disconnected the EGR valve today but i haven't noticed any difference.
    Click here to enlarge
    ---306 hdi---Stage 2 165bhp 270lb/ft, De-Cat, De-EGR, Induction Kit, FMIC
    98% of people hate Jeremy Clarkson. If you are part of the 2% which doesn't, put this in your sig!

    Straights Are For Fast Cars, Corners Are For Fast Drivers... Click here to enlarge Click here to enlarge
    http://en-gb.facebook.com/people/Tom-Baxter/692255268

  6. #6
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    Re: 306 hdi ticking/tapping noise

    it COULD be normal....

    kinda hard to judge sounds through the written word....
    cubic inches, there's no substitute...

  7. #7
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    Re: 306 hdi ticking/tapping noise

    Click here to enlarge Originally Posted by Jetronic
    it COULD be normal....

    kinda hard to judge sounds through the written word....
    yeh i understand, just doesn't sound normal,

    thanks
    Click here to enlarge
    ---306 hdi---Stage 2 165bhp 270lb/ft, De-Cat, De-EGR, Induction Kit, FMIC
    98% of people hate Jeremy Clarkson. If you are part of the 2% which doesn't, put this in your sig!

    Straights Are For Fast Cars, Corners Are For Fast Drivers... Click here to enlarge Click here to enlarge
    http://en-gb.facebook.com/people/Tom-Baxter/692255268

  8. #8
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    686

    Re: 306 hdi ticking/tapping noise

    Sounds like you need new injectors Click here to enlarge

    I have seen this a few times now, they start to pink when the pre-injection is stopped at 3100 rpm.
    Click here to enlarge

  9. #9
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    Re: 306 hdi ticking/tapping noise

    there dear as well rnt they? any way of testing them?? any other signs that they are on there way out?? would some injector cleaner sort them out?
    thanks
    Click here to enlarge
    ---306 hdi---Stage 2 165bhp 270lb/ft, De-Cat, De-EGR, Induction Kit, FMIC
    98% of people hate Jeremy Clarkson. If you are part of the 2% which doesn't, put this in your sig!

    Straights Are For Fast Cars, Corners Are For Fast Drivers... Click here to enlarge Click here to enlarge
    http://en-gb.facebook.com/people/Tom-Baxter/692255268

  10. #10
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    Re: 306 hdi ticking/tapping noise

    Click here to enlarge Originally Posted by tbaxter08700
    there dear as well rnt they? any way of testing them?? any other signs that they are on there way out?? would some injector cleaner sort them out?
    thanks

    Get a tester on it and see the flow correction on them. They tend to be rather high when they are work.
    Click here to enlarge

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