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Thread: Carb Springs

  1. #1
    Joined
    Jul 2004
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    Ft Worth Tx
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    1,095

    Default Carb Springs

    If I put in the gold spring does that mean I will have the highest pop off pressure I can get? That is the largest spring correct?

  2. #2
    Joined
    Jun 2002
    From
    Charlotte NC
    Posts
    1,868

    Default Re: Carb Springs

    Why would you want it that high?

    Pop off pressure is a combination of the spring and needle and seat size.
    Providing mobile JetSki service to the Charlotte / Lake Wylie area.

  3. #3
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    Default Re: Carb Springs

    dank I am having carb problems at the moment so I am trying to figure out where I need to be I ordered a new needle valve and it came with the gold spring the package OEM bombardier was needle valve 2.0 so I am assumong that this is the highest and would like to know if I out the other ones that came in the carb rebuild kit if this would lower it. my problem is that I can only get my ski to start and stay running as long as I have the choke out. as soon as I let the choke in it dies

  4. #4
    Joined
    Sep 2004
    From
    florida
    Posts
    118

    Default Re: Carb Springs

    How many turns out are you on high and low speed adjuster screws.sounds like something could be restricting fuel flow.

  5. #5
    Joined
    Nov 2003
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    Glendora, CA
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    6,846

    Default Re: Carb Springs

    Frankey,
    If the motor will only run with the choke out, changining your needles and seats or springs is not the answer.
    I would remove the carb and open it up to see what is blocking the fuel from passing through the carb and the jets.
    It could be a blocked pilot jet, a misaligned gasket, a clogged passage, a bad fuel pump or something really simple like you have the two fuel lines reversed.
    Bill O'Neal <br>
    WCM
    <a href="http://www.watercraftmagic.com"

  6. #6
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    Ft Worth Tx
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    Default Re: Carb Springs

    Bill thanks I found the problem and its exactly like you said now I have to figure out how to fix it. I bought a brand new carb kit from a dealer here (40 bucks) and well the rubber piece that goes on the fuel pump side with the circle and line in the middle is a bad part and does not fit in the slots. Now I have to figure out if they are going to exchange it for me I doubt it but I have also ound another source for kits that is $15 cheaper.

  7. #7
    Joined
    Nov 2003
    From
    Glendora, CA
    Posts
    6,846

    Default Re: Carb Springs

    Try flipping it over. That diaphram only goes one way or it blocks the main fuel inlet hole.
    Bill O'Neal <br>
    WCM
    <a href="http://www.watercraftmagic.com"

  8. #8
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    Ft Worth Tx
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    Default Re: Carb Springs

    Bill Its not the diaphram itself that I was speaking of it is the oring that fits in the groove below that diaphram.( part 6a on the Mikuni rebuild manual for super BN38 and BN44) Also I have a question about how flat and straight the little clear pump diaphrams have to be as one of mine when installing got a little kink in it would that cause this type of problem? Thanks

  9. #9
    Joined
    Nov 2003
    From
    Glendora, CA
    Posts
    6,846

    Default Re: Carb Springs

    Without seeing it I have no idea, but it should be in great shape to work correctly.....
    Bill O'Neal <br>
    WCM
    <a href="http://www.watercraftmagic.com"

  10. #10
    Joined
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    Ft Worth Tx
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    Default Re: Carb Springs

    BIll I have attached a pic of the part I was referring to. Also I have purchased a new kit from ebay and will switch out the pump diaphrams and see how that affects the carb.On the pic it is item 6aon the right and the little pump diaphrams I was speaking of is item 3
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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