Astra 8v Dec 2000 - valve compensators

Discussion in 'Astra' started by Alan Berry, Apr 22, 2006.

  1. Alan Berry

    Alan Berry Guest

    I may have to replace one of the hydraulic tappets ( Compensators). Every so
    often when starting after a long rest, it sounds like on of the tappets is
    lose and then fixes its self after a couple of seconds. I believe there are
    tools which allow you to be able remove the rocker and tappets without
    having to remove the camshaft etc.

    1) Does any body have any advice as to were to purchase such a tool - Part
    no etc.

    2) Is this a relativly straght forward job or are there some potential

    Alan Berry, Apr 22, 2006
  2. Alan Berry

    Mike Guest

    Just guessing on this one, but I suspect the hassle of a one off job and
    cost of a specialist tool is more than the job is worth. have you tried
    asking round your local garages for quotes?

    Mike, Apr 23, 2006
  3. Alan Berry

    me140 Guest

    I would try giving it an oil change first using an oil flush to make sure
    you get all the crap out and refill with a good quality oil.
    How do you know which tappet is the noisy one? Not going to be cheap if
    you have to replace them all and if the noise only lasts a couple of seconds
    is it worth it?
    me140, Apr 24, 2006
  4. Alan Berry

    Alan Berry Guest


    Yep local garage may be a option. Our local NetworkQ went bust. There are
    now no local vauxhall garages close but I do use a small garage that gives
    good service.

    I have since found that the tool is about £10. Would still be usfull to get
    feedback from someone who has done this type of job.

    Alan Berry, Apr 25, 2006
  5. Alan Berry

    Alan Berry Guest

    Yes Mark - good point - just planning for the worst if needed.

    I have never had any problems previous with hydraulic tappets on other
    vauxhalls and have completed may 100,000's miles without having to touch
    them. I can live with the symptom provided its not a sign of a future

    The car has only done 40,000ml and has been regularly serviced with no
    expense spared. Must admit I only started to notice this in the winter when
    I guess the oil is thicker + on the last oil change I did use GTX - slightly
    higher viscosity than previous.


    Alan Berry, Apr 25, 2006
  6. Alan Berry

    Paul Guest

    That may well be your problem GTX is a 15/50 oil, on a car with only 40k
    miles you should be using a 5/40 oil, your oil is to thick to properly fill
    the hydraulic tappets when cold.
    Paul, Apr 26, 2006
  7. Alan Berry

    Alan Berry Guest


    I think you may be right, I just did not expect such a difference. I have
    used GTX for years on similar engines with no issues.

    I have also pondered on the idea that the loose tappet may also have been
    caused by perhaps the residue oil leaking away when the engine had been
    stopped for a long while in a certain position. As i said this only appears
    every so often with quite a disitinctive knock whilst the compensator

    I guess before doing anything else I will change the oil back to the orignal
    Shell Helix plus.


    Alan Berry, Apr 26, 2006
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