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Thread: Leak Down Test

  1. #1
    FLjoyrider's Avatar
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    Leak Down Test

    Had the hardest time getting all of the leaks from my gage setup, but once those were sorted out I got a drop from 8-4 PSI in 15 mins with a tiny leak between the exhaust ports and cover plates. Did the soapy water trick and didn't find any bubbles or leaks around seals or sealing surfaces. Is there anything I am missing to this or is everything good to go?


  2. #2
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    I'd guess 8-4 PSI over 15 mins is good. 8-4 PSI in a minute would be bad. I'd run with it.

  3. #3
    SPEED KILLS, BUT YOU GET THERE QUICKER Keddano's Avatar
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    Since you know were it was leaking,I would agree with Xlint. Or fix that leak and try again.

  4. #4
    every time I have done a pressure test the only leaks I had were the test plates save for one! the oil injection pump block off plate I bought from Hot products was made incorrectly and was discovered due to the pressure test so it is a pain !but definitely worth the time and hassle! Z

  5. #5
    FLjoyrider's Avatar
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    I messed with that plate for a good half hour flipping it over, adding sealant, anything I could think of. Made it worse.. then got it back to where I started (small little white foam bubbles) and called it good. I was going off of data from jetskimechanic.com so I spent a lot of time trying to get it to only drop 1PSI over 15 mins.

  6. #6
    seaobin's Avatar
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    sORRY TO DREDGE UP AN OLD POST, BUT.....

    WHAT DO YOU USE TO COVER THE EHAUST AND REED OPENINGS WHEN DOING THIS TEST.

    THANKS

  7. #7
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    I use racquette balls that are cut in half, then help in by tape.

    I have my carbs mounted up and plug them with the ball half as well.

    I think Starflight made some covers for the reed openings, which will also work.

  8. #8
    Lake Mead Bum & BTLS Mark starflight's Avatar
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    Quote Originally Posted by xlint89 View Post
    I think Starflight made some covers for the reed openings, which will also work.
    I used 3/16ths aluminum and stick-on gasket material. The exhaust sealed easily. For the intake side, I would suggest you use 1/4" aluminum. I was able to get them to seal w/ sealant though. As the pics show, I tapped the guage and pressure ports into the caps.
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