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  1. #1

    Join Date
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    2004 Virage Bogs over 4500 RPM....need help!

    I'm new to the forum...own a 2004 Virage since new...never a single problem. 117 hrs on boat. Status now. Starts perfect....idles perfect...when I open throttle ..jumps up on plane fine then seems to loose fuel feed at 6000 rpm. If I keep throttle open when this happens, it will stall...if I release throttle, it will idle again...seem fine, then repeat above.

    - no water in fuel
    - new plugs, gapped proper

    I've looked thru forum and see fix ranging from cdi,to carb diaphragm to stator.

    One other observation...if at 3000-4000 rpm I slowly increase rather than dump the throttle....engine will start to bog ...if I pull the choke out half at this time it will keep the engine alive for a few seconds then repeat as above.

    Any ideas appreciated!

    Mark


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    Carburetor engine, correct?

    Perhaps it is time to internally clean and rebuild the carburetor. Use genuine OEM carb parts.

    Replace the original fuel hoses and replace the fuel selector valve. New OEM fuel filter too. It is important that the entire fuel system, including every hose connection, be 100% air tight. And internally clean.

    A simple test. Run it on the water until the problem happens. Shut engine off, then open gas cap. Watch for a strong pressure release or vacuum release. Close gas cap. Test ride right away. Does the problem stay about the same or get better?

    See my signature links for more useful info and Parts Sources.

  3. #3

    Join Date
    Jul 2013
    Location
    Buffalo NY
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    Thks...will try that now. Do I want to see strong vacuum pressure or none?

    I have read most of your posts...really great! My fuel hoses are red and look perfect. With air filter off and throttle squeeze....fuel squirts in nice.

    I can re-build carb...but is there an easy way to check if something is wrong with cdi or other electronics? I have the brown regulator and it looks clean.

    Water intake clean.

    Thks
    Mark

  4. #4

    Join Date
    Jul 2013
    Location
    Buffalo NY
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    15
    Quote Originally Posted by K447 View Post
    Carburetor engine, correct?

    Perhaps it is time to internally clean and rebuild the carburetor. Use genuine OEM carb parts.

    Replace the original fuel hoses and replace the fuel selector valve. New OEM fuel filter too. It is important that the entire fuel system, including every hose connection, be 100% air tight. And internally clean.

    A simple test. Run it on the water until the problem happens. Shut engine off, then open gas cap. Watch for a strong pressure release or vacuum release. Close gas cap. Test ride right away. Does the problem stay about the same or get better?

    See my signature links for more useful info and Parts Sources.
    Sorry...forgot to answer your question....carb engine correct...red engine...117 hrs on engine...stored inside in winter...engine and all components look as new.

  5. #5
    Rasta Mon Condoms We Be Jammin!!!!! TxVirageTx's Avatar
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    clogged inlet screen on metering block

  6. #6

    Join Date
    Jul 2013
    Location
    Buffalo NY
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    15
    re-building carb today...it looks nice and clean thru-out. No visually apparent problems....already thinking about what is next beyond this if problem remains...also ordered new gas shut off valve. Is there a way to test the old one when off the ski?

  7. #7

    Join Date
    Jul 2013
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    Quote Originally Posted by TxPro1200 View Post
    clogged inlet screen on metering block
    screen on metering block clean as a whistle!

  8. #8
    Rasta Mon Condoms We Be Jammin!!!!! TxVirageTx's Avatar
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    look to see if theres anything clogging the main jet on the back of the metering block,or the smaller jet at the very bottom.

  9. #9

    Join Date
    Jul 2013
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    In the smaller jet...there was a very small spring.... stretched out...I don't know if that is because I pushed it out or it came from somewhere else? should there be a spring in that jet!?

  10. #10
    Banned User
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    The only spring in there should be under the regulator arm.

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