650SX fuel system

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  1. #1
    PWCToday Newbie DudeWithAJet's Avatar
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    Aug 2021
    New York

    650SX fuel system

    I got a 1989 650sx and it bogs at anything above half throttle and maintains the half throttle speed/slows down. I believe the fuel pump is bad since the return line has very little fuel pressure but I was wondering what size of jet I could use for the return line as a short term fix just to see if lack of fuel is the problem?

  2. #2
    Attention ***** PWCToday.com Is My Home Away From Home JonnyX2's Avatar
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    Jun 2006
    Sin City USA

    Re: 650SX fuel system

    Smallest jet they make. May give you an idea if you are on the right track.
    Quote Originally Posted by Firebird A/C&Heating View Post
    OMG.....Rules for 550 vintage ski class...550 ski riders do not conform to any kind of rules. That is why you are riding a 550 ski in the first place. Rules suck....
    PS...the rule book will be in my 550 pump
    Quote Originally Posted by WB1994
    Listen , stop your cryin' , its only an X2.

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