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Engine Tapping

Discussion in 'Land Rover Freelander' started by batasquad, Nov 9, 2007.

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  1. batasquad

    batasquad New Member

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    My Land Rover Freelander 1.8 EXi has a wierd ass tapping noise coming from the engine, im pretty certain that it is the hydraulic tappets. Is there an easy way of fixing them? i have replaced my oil & filter and also added some oil additive to see if that would loosen up the tappets and stop it from knocking but ... alas it's still tapping away. im hoping that there is an easy way to solve it without having to get new tappets.
     
  2. TD4

    TD4 New Member

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    better keep an eye on that before the engine goes through the bonnet!! Tappety tap tap is first sign before your car dies!
     
  3. Optimus Prime

    Optimus Prime Well-Known Member

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    did you use engine flush before you drained the oil ?? Many a sticky tappet freed this way
     
  4. batasquad

    batasquad New Member

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    no i never, would this possibly stop the tapping? if so what is engine flush and how do you use it? lol
     
  5. Optimus Prime

    Optimus Prime Well-Known Member

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    wouldn't definitely cure your problem, assuming that the noise is a tappet. However, in the past, I used it twice on two different Vauxhalls, both fitted with 8v petrol engines, hydraulic tappets, in each case one or two tappets really rattly unless you revved the engine really hard, then they stopped doing it. Ran the engine flush through with the oil change, and the problem went away. Couldn't swear hand on heart that it was the engine flush that cured it, or whether it was the oil change. Back then, I was changing the oil on these cars every 5000 miles, so it was unlikely to be oil based gunk sticking them up.

    There are quite a few engine flushes available, have a look along the shelf in Halfords. It's basically and solvent and thin oil mix which you put in the oil filler, then run the engine on fast idle for 20 mins or so, then do the oil and filter change straight away while the oil is red hot. This way all the crud drains out of the engine, the hotter the oil, the thinner it becomes, and so drains more completely.

    Then change the filter and oil, and away you go.

    In the past, on older less sophisticated engines, I used to use a post oil change treatment, such as slick 50. However, things (engines) have changed a lot since then, and now I wouldn't dare use it in a modern engine with finer tolerances, turbo etc. I just rely on good old fashioned regular oil changes, and use an engine flush every 3rd or 4th oil change.
     
  6. batasquad

    batasquad New Member

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    Thanks very much wigglytuff, i'll try that, i hope it helps
     
  7. bigshane

    bigshane New Member

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    Hi, search the forum for my "a funny thing happened" it needs sorting befor you loose everything
     
  8. ming

    ming SPACE TWOT

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    hydraulic tappets are a good system but like all things can fail, i would do as wiggly suggest and if after that [still tapping] take orft tappet cover ,un engine[tick over],prod in feeler gauge to correct settin on tappet sets till ya find the culprit, then is it the hydraulic adjustment fooked or yer valve or stem. . . . .:)
     
  9. george_k

    george_k New Member

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    Some people use pure diesel for engine flush. They run at idle revs for a couple of minutes before change the oil.
    BTW the right type of engine oil is very important in this case.
     
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