How to determine if timing belt jumped a tooth

Discussion in 'General Motoring' started by John Roden, Oct 13, 2003.

  1. John Roden

    John Roden Guest

    I read the prior posting about pinging and the possibility of a jumped
    tooth in the timing belt--My new used 240 turbo pings like that and
    has a receipt for a new timing belt (out of state) so I'm wonding if
    there is a way to check for this without tearing out the fan, shroud,
    etc. Mostly, it pings under hard acceleration and seems to idle just
    John Roden, Oct 13, 2003
    1. Advertisements

  2. John Roden

    Gary Heston Guest

    If you can see the marks on each pully, check them to verify that
    they align with the reference marks on the belt.

    Also, what grade of gasoline are you using? Turbos generally require
    higher octange; premium at least, or super premium.

    Gary Heston, Oct 13, 2003
    1. Advertisements

  3. John Roden

    James Sweet Guest

    You can check by removing the timing belt cover, though the marks can be
    difficult to see. One tooth off is all it takes to make quite a difference
    in performance. Check your timing too, and make sure you run at least 89
    octane gas, most 240 Turbos will ping on 87.
    James Sweet, Oct 13, 2003
  4. John Roden

    John Roden Guest

    Oops, I'm such a tool. I just picked it up today, gassed up with high
    test and it runs great.

    Since I now own a 20 year old volvo, however, I will become a regular
    with this group.
    John Roden, Oct 14, 2003
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.