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Compression Test Results

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    #1

    Compression Test Results



    Just did my compression test on a warm engine (F22A6). Here are the results both Dry & Wet with W.O.T. and the spark plugs above have about 3000 miles:
    #1 #2 #3 #4
    190 190 185 192 = Dry
    218 212 225 217 = Wet

    I wanted your guys' opinion whether or not I should be concerned especially by #3. I use my Honda daily, only to work but I was planning on modifying it and updating more parts. It runs fine but it feels like it could use more power on take off.
    Tags: None
    #2
    Oh I forgot, engine has 166K miles and I'm not even sure when or if the timing belt was changed. Previous owner had no clue but judging from the maintenance that I've done this car was pretty neglected.

    Comment

      #3
      Those are good numbers. Nothing to be concerned about.
      Originally posted by Mishakol129
      Do not disrespect my intelligence. I am the smartest person I know : )

      Comment

        #4
        Looks good to me.

        IIRC, 135 psi is minimum with 10% maximum variation.
        A&P-IA

        Comment

          #5
          Originally posted by oyajicool View Post
          Looks good to me.

          IIRC, 135 psi is minimum with 10% maximum variation.
          I believe your PSI number is right, but I thought the variance number was higher......but I have been known to be wrong before.
          Originally posted by Mishakol129
          Do not disrespect my intelligence. I am the smartest person I know : )

          Comment

            #6
            Its 20%

            Comment

              #7
              Checked the manual. Maximum variation is 28psi.

              So, 20% is just about right, too, if you were on the low limit on one cylinder.

              Sounds to me, it is a lot.

              But, my engine has way too much variation than that and still running.

              I don't know for how long,,,,,

              I'm thinking that 20% generally applies to differential compression test (aka leak-down test),,,, ,,,,,
              Can someone chime in?
              Last edited by oyajicool; 08-08-2013, 11:32 PM.
              A&P-IA

              Comment

                #8
                Thanks for the replies. #3 is about 20% variance. I'm hoping it won't be a big deal and could go on for a while. I am planning on replacing the injectors so at least now I feel a little less worried about throwing more money on my accord.

                Comment

                  #9
                  Your highest cylinder is 192, so you can have a lowest at 164.
                  A&P-IA

                  Comment

                    #10
                    CamedaCB7, What kind of compression tester did you use if I may ask?

                    I have been considering getting one for a while now.


                    "Great spirits have always encountered violent opposition from mediocre minds." -Albert Einstein

                    Comment

                      #11
                      Originally posted by 2winRB25 View Post
                      CamedaCB7, What kind of compression tester did you use if I may ask?

                      I have been considering getting one for a while now.
                      I wanted to get a good accurate test so I went and spent $70 for a Craftsman from Sears. I am going to return it though Lol.

                      Comment

                        #12
                        Originally posted by CameDaCB7 View Post
                        I wanted to get a good accurate test so I went and spent $70 for a Craftsman from Sears. I am going to return it though Lol.
                        Alright, thanks!


                        "Great spirits have always encountered violent opposition from mediocre minds." -Albert Einstein

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                          #13
                          Those are great numbers. I wish my motor was anywhere close to that lol. You should have no problems doing performance upgrades, just don't cheep out where it counts

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