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  • Compression check

    What would be considered an acceptable to good compression reading on a stock '88 LX with 173,000 miles. And an ok number between cylinders. Thanks!

  • #2
    I'm thinking 140 and higher with no more than 15 percent between cylinders.
    Semper Fi til I die!

    1993 Fescort GT 1.8 BP automatic Kia Rio front struts and cut springs Cut Front Festiva springs with Monroe Aspire struts in rear


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    • #3
      with that kind of miles, i would say 120 and higher would be acceptable especially if you aren't burning oil, if you have normal power, then i wouldn't be too worried until you have an issue

      -"Hairlipstiva" 1991 GL 5spd (swapped from an auto), rolling on Enkei 14x6 +38 with 195/45/14 Toyo's, Jensen MP5720 CD deck, tach install, LED strip in cluster, down position rear wiper, FMS springs, Gabriel shocks on 4 corners, Acura Integra short shifter
      -Escort GT 91 donor car with BP, G5M-R tranny to be dropped in the little guy...
      -Aspire brake swap COMPLETE!
      https://www.wunderground.com/persona...?ID=KOKOWASS38

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      • #4
        No more than 5% variation among cyclinders.
        Original owner of silver grey carburetted 1989 Festiva. 105k km as of June 2006. 140k km as of June 2021.

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        • #5
          Originally posted by WmWatt View Post
          No more than 5% variation among cyclinders.
          less than 10% is considered good. 15% is acceptable.
          Jim DeAngelis

          kittens give Morbo gas!!



          Bright Blue 93 GL (1.6 8v, 5spd) (Hula-Baloo)
          Performance Red 94 Aspire SE (Stimpson)

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          • #6
            The numbers are in! 150/140/150/145. Plugs looked good. Replaced plugs and wires anyway.

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            • #7
              looks good!
              Jim DeAngelis

              kittens give Morbo gas!!



              Bright Blue 93 GL (1.6 8v, 5spd) (Hula-Baloo)
              Performance Red 94 Aspire SE (Stimpson)

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              • #8
                10/140 = 7%
                Original owner of silver grey carburetted 1989 Festiva. 105k km as of June 2006. 140k km as of June 2021.

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