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  1. #1

    compression test

    I just tested my compression on my RXT-X 255, and found piston 2 with 6.2 bar, and piston 1-3 with 7.2 bar, is this normal or it is low in compression ??

    Also I notice that the catch can, is leaking oil, and I found the engine covered with oil.


  2. #2
    monaroman76's Avatar
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    No. Your compression is very low. How many hours on the motor?

  3. #3
    only 140 hur, but it was modified with 3 rude and other mods. what is the proper compression reading ?

  4. #4
    monaroman76's Avatar
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    Around 10 bar. Was it tuned properly?

  5. #5
    Sturm215's Avatar
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    I'd say you need to confirm where the oil is coming from, then I'd do a leak down test to see if you can hear where the air is escaping from.

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