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Thread: engine knocking noise??

  1. #21
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    I think I'll book him in to do as you suggested and leave it parked up for a bit. How much are the tensioners (ball park figure).
    Cheers.

  2. #22
    Senior Member S-Type Owner's Avatar
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    Quote Originally Posted by mikky99 View Post
    I think I'll book him in to do as you suggested and leave it parked up for a bit. How much are the tensioners (ball park figure).
    Cheers.
    I am "across the pond" in California, so perhaps one of our GB forum members can chime in on this. I do know that is is not cheap, as the front of the engine has to be disassembled to gain access to the tensioners.
    2003 S-Type 3.0, Zircon with the "Premium Package"...

  3. #23
    Senior Member Jim_S-V6_2004's Avatar
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    Mikky...

    Why are you not answering our questions bud?

    Not much point advising you when you don't answer questions.

    .

  4. #24
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    Sorry guys not trying to be awkward at all. Been using my phone instead of the laptop.
    Engine has done 106k and the oil was about a cm over the max level on the dipstick.
    The tensioners have not been done on the car.

  5. #25
    Senior Member Jim_S-V6_2004's Avatar
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    Ok.

    At 106k the engine is not worn, you can expect up to 500k miles.

    If you discuss 10W40 you will start a forum war.

    Stick with 5w30 as recommended.

    Which Shell oil did you use, there are several specs of it in 5w30.

    .

  6. #26
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    I used shell helix hx7 semi synthetic.
    It's what was recommended to me from euro car parts when I went to buy it.
    And I will not mention the other thickness of oil again. Haha.
    Thanks.

  7. #27
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    Is that oil okay ? I was told to go for semi synthetic.

  8. #28
    Senior Member Jim_S-V6_2004's Avatar
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    Hi Mikky.

    Yes it's fine: https://www.shell.com/motorist/oils-...hx7-5w-30.html

    Every manufacturer gives a spec or two or three, and it's usually whatever its chosen oil bidder has.

    A low ash oil is recommended if I remember.

    Sometimes it's possible to cure your tappet tappet by taking the car for a one-hour motorway run.

    It won't do any harm and should disappear when you're going over 20-30mph or so?

    They are hydraulic and can gum up or leak a bit of oil, so a run with the oil getting hot sometimes fixes that.

    Let us know.

    .

  9. #29
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    Yes the noise does go as soon as I'm moving really. But definitely 20mph or above and it cannot be heard.
    I took it for a good drive last night like you just suggested.
    I have gone down just now to drop my son to the bus stop for school and the noise was there but it had definitely calmed down quite a bit.
    Maybe the oil change unsettled things.
    Did seem quite common on a Google search that other brands of car have claimed to have a noiser engine for a few days to a week after an oil service.
    Hopefully after another drive today it will clear up.
    Thanks again guys.

  10. #30
    Senior Member Engineer's Avatar
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    All the Jaguar V8 engines have solid buckets or tappets as you call them with removable shims for valve clearance adjustment they are not hydraulic, so stop trying to cure a fault that doesn’t/can’t exist as you could end up with a severely damaged engine.

    Best advice is stop driving the car, then go and find a competent technician/mechanic (preferably one who knows Jaguars) who should be able to diagnose you fault correctly.
    “If you see a gap and don't go for it, you are no longer a racing driver”

    JAGUAR STR

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