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xj550 valves need adjusted?

Discussion in 'XJ Technical Chat' started by pat_in_the_hat, Feb 15, 2022.

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  1. pat_in_the_hat

    pat_in_the_hat New Member

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    it has a new sintered fuel filter. and it has a new petcock. i did the mouth suck test and it was working on the bench. the petcock just doesnt seal when the smallest of crap goes thru it. i think the solution is to get the tank as clean as possible. even tho it looked good to me after the last time i cleaned it. maybe more acid.
     
    pat_in_the_hat, Apr 4, 2022
    #21
  2. Huntchuks

    Huntchuks Well-Known Member

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    In that case check the petcock screen in the tank for tears.
     
    Huntchuks, Apr 4, 2022
    #22
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  3. pat_in_the_hat

    pat_in_the_hat New Member

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    an update:
    cleaned the tank again and put a screen over the petcock intake. has been running great. no fuel leakage, perfect running bike. ive put probably close to a hundred miles on it with no problems.
    until now.
    Now it doesnt want to keep a steady idle. it slowly lowers the idle until it dies (takes about a 30 seconds to go from 1100 rpm to dead). runs great until its at a stop. ive increased the idle screw, but thats just making the rpms hang up when coming off the throttle. plus, i dont think it should be that since it was running perfect a few days before.
    any suggestions? clogged fuel filter? loose petcock vacuum tube? plan on taking a deeper look when im off work
     
    pat_in_the_hat, Jun 7, 2022
    #23
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