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  1. #41
    This is how I run a jetski shop in the desert nmpeter's Avatar
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    push/pull=pressure-vacuum

    most of the time when I have to tell a customer his engine is leaking, they never go for the repairs

    got one in the shop now, kaw 1100..has a deadly case leak somewhere..start the engine and it will idle for a couple of seconds then go screaming to redline and dieseling so bad I have to stuff the carbs to shut it down.

    even tried it with my known good carbs..gaskets all replaced..still screaming.

    Told him it would be an hour labor to confirm the air leak issue and perhaps fix it if it's readily accessible, but he didn't want to spend more then a couple of hundred on the ski since he got it cheap at an auction.

    Since that discussion I have not heard from him, nor have my calls been returned.

    heading to the yard queen area in another week or two. That was the last time I ailed to listen to the voide in my head saying "send him away..send him away"

    only downside for me was I cut my thumb pretty badly on a ziptie pullin the carbs off.

  2. #42
    dockwalker's Avatar
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    Amazing how hard it is to convince some folks that their crap is getting ready to explode.Got a couple around me.

  3. #43
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by nmpeter View Post
    push/pull=pressure-vacuum...
    How does this apply to testing jet pumps?

  4. #44
    quadzilla's Avatar
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    Quote Originally Posted by K447 View Post
    Quote Originally Posted by nmpeter View Post
    push/pull=pressure-vacuum...
    How does this apply to testing jet pumps?

    Hey there.

    I would imagine he actually means testing the fuel pumps with vacuum and pressure to ensure the diaphragms are intact.

    .

  5. #45
    quadzilla's Avatar
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    65U

    Here's a somewhat extreme version of pressure testing a two stroke motor..

    This particular motor was proving difficult to track down the slow leak it had.
    - was leaking about half a psi per minute (actually, it was almost 2psi every five minutes)





    It's all good now of course..

  6. #46
    TX21's Avatar
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    fyi 10 psi will blow out your crank seals. Just learned that one. Thought It was 10 and didn't think twice before I pumped away....la la la la POW! Cold beer made me feel better. Have to replace them tomorrow so I can get my first ride of the season.

    So I get it back together and the crank seal leaks along with the case where it meets the seal.

    This is my 10+ two stroke jet ski build and I still got it wrong. Bottom line .....test.
    Last edited by TX21; 09-28-2015 at 07:53 PM.


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