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Exhaust Valves Sticky

Discussion in '456/550/575' started by 2005575superamerica, Sep 30, 2024.

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  1. 2005575superamerica

    2005575superamerica Karting

    May 11, 2011
    130
    New York
    #1 2005575superamerica, Sep 30, 2024
    Tried the Home Depot route but no luck

    Seeking recommendations

    Thanks for your replies
     
  2. tazandjan

    tazandjan Three Time F1 World Champ
    Lifetime Rossa Owner

    Jul 19, 2008
    39,164
    Clarksville, Tennessee
    Full Name:
    Terry H Phillips
    #2 tazandjan, Sep 30, 2024
    Exhaust valves or bypass valves?

    If latter, vacuum leak? Ours are fail closed, so if insufficient vacuum, they will not operate correctly.
     
  3. 2005575superamerica

    2005575superamerica Karting

    May 11, 2011
    130
    New York
    #3 2005575superamerica, Oct 1, 2024
    My bad Muffler bypass valves

    Thought about vacuum leak but when lubricated, they work fine

    Read about dry graphite mixed with alcohol to spray the pivot points
     

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