300tdi ticking noise





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  1. #1
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    Default 300tdi ticking noise

    Hi guys,

    I can hear a ticking noise coming from the engine when going downhill, in gear and foot off accelerator.

    The ticking is not noticeable when stationary and idling (even when revving).

    Any ideas?

  2. #2
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    Default Re: 300tdi ticking noise

    Could be one of the following:

    Exhaust manifold gasket.
    Loose valve rocker.
    2012 Jeep Sahara Unlimited 3.6 V6
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  4. #3
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    Default Re: 300tdi ticking noise

    Quote Originally Posted by Ro55 View Post
    Hi guys,

    I can hear a ticking noise coming from the engine when going downhill, in gear and foot off accelerator.

    The ticking is not noticeable when stationary and idling (even when revving).

    Any ideas?
    When going downhill - no accelerator - no fuel is being injected
    So motor is quieter - so maybe then noise becomes more apparent

    The other option is that your front prop uj is just starting to go - seems unrelated I know but that has happened to me recently

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  6. #4
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    Default Re: 300tdi ticking noise

    Could also be the vacuum pump.
    '07 Land Rover Defender 110 TDI 300 Kalahari (Meisiekind˛)
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  8. #5
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    Default Re: 300tdi ticking noise

    Thanks for the advice. I'll do a process of elimination starting with the cheapest

  9. #6
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    Default Re: 300tdi ticking noise

    The cheapest is ignore it.
    2012 Jeep Sahara Unlimited 3.6 V6
    Percivamus

  10. #7
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    Default Re: 300tdi ticking noise

    Broken valve cap possibly.

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  12. #8
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    Default Re: 300tdi ticking noise

    Replaced the exhaust manifold gasket, and lift pump... still ticking.

    Checked for head gasket blowing at the back, and had a look and feel under the valve cover. All seems good.

    I'm going to replace all the u-joints over the weekend.

    Next culprit, vacuum pump? Seems to be leaking a bit.

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