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How to? <=Do a compression test.

Discussion in 'FZR250.com - Archives' started by mr_mordred2095, Mar 13, 2006.

  1. mr_mordred2095

    mr_mordred2095 New Member

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    Just a question, how would I go about doing a compression test? The guys over at yamaha suggested i do this first before taking it to them to tune the carbies.
     
    mr_mordred2095, Mar 13, 2006
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  2. FZR Dude

    FZR Dude New Member

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    Buy a screw-in type compression tester. Remove all the spark plugs and check by attaching the tester to each cylinder in turn. Crank over the engine a couple of revs and record the numbers.

    Give those to the shop and post them up here.

    Heres one on ebay...
    <!-- m --><a class="postlink" href="http://cgi.ebay.com.au/BRAND-NEW-GRIP-Automatic-Compression-Tester_W0QQitemZ4621303715QQcategoryZ35625QQssPageNameZWDVWQQrdZ1QQcmdZViewItem">http://cgi.ebay.com.au/BRAND-NEW-GRIP-A ... dZViewItem</a><!-- m -->
     
    FZR Dude, Mar 13, 2006
    #2
  3. TBone

    TBone New Member

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    finger test... just stick your finger in the spark plug hole (not all the way!!)

    compare the preasure b/w the cilinders... and possibly loose a finger or two!!
     
    TBone, Mar 13, 2006
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