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Eva, the ZXR250 bitsa.

Discussion in 'Kawasaki 250cc In-line 4's' started by Wade Wilson, Jan 18, 2014.

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  1. Wade Wilson

    Wade Wilson Beaяs Premium Member

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    My Bike:
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    the new kit went into the carb and I set everything to stock settings.

    She started first time with a bit of choke and I let her idle for about 15-20 minutes.

    Tried to take her for a ride and she wouldn't break 4k rpmrpm and as soon as I came to a stop she stalled. I had to try and start her and I could only do it at full throttle and the bike would barely idle.

    I am now totally out of ideas.
     
    Wade Wilson, Jun 20, 2014
    #81
  2. ajverma

    ajverma Active Member Premium Member

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    Pull your plugs out, take a photo and post it here, we can help diagnose what the problem is.

    Don't feel disheartened, you're almost there! I can assure you that we've all had the frustration with niggling issues like you're having now, you can do it!
     
    ajverma, Jun 20, 2014
    #82
  3. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

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    I concur with aj. What are you're plugs like have you flooded them before? Could they be fouled?

    I had abit of trouble with mine after the Litetek kit, as I had undone the sync screws and put the carbs completely out of sync. It would only rev to 7k and rough as balls after 3k.

    Also I found that the oring for the pilot screw is a touch thicker and needed to go an extra turn out. Mine are set 3.5 turns out.
     
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    Th3_Huntsman, Jun 20, 2014
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  4. Wade Wilson

    Wade Wilson Beaяs Premium Member

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    [​IMG]

    [​IMG]



    All of the plugs have heavy carbon fouling. I think she's running too rich still. Air filter is clean.

    The float heights are at 13mm, I had to move them down from 15-17mm, But I'm still running the 125, 128, 128, 125 jets. The pilot screw is at 2.5 turns out.

    Before failing to start she would not go past 4k rpm.
     
    Wade Wilson, Jun 20, 2014
    #84
  5. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

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    How old are those plugs? Maybe grab a new set because they don't look good at all. If they are new we definately need to work out how they are that dirty.
     
    Th3_Huntsman, Jun 20, 2014
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  6. Wade Wilson

    Wade Wilson Beaяs Premium Member

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    My Bike:
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    They're about 2 months old.

    I've had them out before and gave them good clean about a week ago.

    I think it's running rich.
     
    Wade Wilson, Jun 20, 2014
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  7. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

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    Hmmmm, that is interesting just watched the video. It's strange how it dies could you keep it going on just the choke?

    If you have already cleaned those plugs recently they are cactus now. New ones are needed. That should get it too fire.
     
    Th3_Huntsman, Jun 20, 2014
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  8. ajverma

    ajverma Active Member Premium Member

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    Agreed with Huntsman, you need new plugs!

    Get a set of iridiums, cr9eix, will help this problem, mine ran like **** with normal plugs but became perfect with iridiums!
     
    ajverma, Jun 20, 2014
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  9. Wade Wilson

    Wade Wilson Beaяs Premium Member

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    No, the choke didn't do much of anything, I had to keep full throttle just to get her started.

    I'll get some new plugs tomorrow, But I want to find out what's fouling them. I might have another look at the carbs as well.
     
    Wade Wilson, Jun 20, 2014
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  10. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

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    Do the bench sync again and up your pilot screws a half turn. Brand new plugs and a caning to blow the carbon off your valves and you should be all good!
     
    Th3_Huntsman, Jun 20, 2014
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  11. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

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    Th3_Huntsman, Jun 20, 2014
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  12. Wade Wilson

    Wade Wilson Beaяs Premium Member

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    I bench synced them when I saw putting the kit in them.

    Is that tighten them by half a turn?
     
    Wade Wilson, Jun 20, 2014
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  13. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

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    I think let them out another half turn but that's based on my experience with my bike. When you put it back together with the new plugs and it runs, take it for a ride around the block and pull a spark plug to check it
     
    Th3_Huntsman, Jun 20, 2014
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  14. ajverma

    ajverma Active Member Premium Member

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    Try running it with some 'start ya bastard' or equivalent, see what happens. If it run's properly you've got a fuel supply problem, if it doesn't run, you've got a spark problem. ( given that you've checked compression is ok)
     
    ajverma, Jun 20, 2014
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  15. Wade Wilson

    Wade Wilson Beaяs Premium Member

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    Well, I didn't have enough cash to get some iridiums so I just cleaned off my spark plugs with some sandpaper and petrol.

    She's running a bit better, but the stutter is still there.

    I managed to capture a small snippet of the stutter on video. When this happens there is no acceleration.

    Also when I was pulling in, I was at about 3/4 throttle.

     
    Wade Wilson, Jun 21, 2014
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  16. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

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    Is there a knocking noise I could hear?
     
    Th3_Huntsman, Jun 21, 2014
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  17. Wade Wilson

    Wade Wilson Beaяs Premium Member

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    My fuel tank wasn't bolted down, same with the fairings.
     
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    Wade Wilson, Jun 21, 2014
    #97
  18. Wade Wilson

    Wade Wilson Beaяs Premium Member

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    Just took another quick ride, the stutter and the flat spot is still there.
     
    Wade Wilson, Jun 21, 2014
    #98
  19. ajverma

    ajverma Active Member Premium Member

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    plugs are $5 for each one at supercheap auto... just get non iridiums for now, either way you need new plugs
     
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    ajverma, Jun 21, 2014
    #99
  20. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    And your gaps may be way out if you have been cleaning them with a hammer and chisel :D
     
    GreyImport, Jun 21, 2014
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