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Eva, the ZXR250 bitsa.

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

  1. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

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    what exactly is it doing?
     
  2. Wade Wilson

    Wade Wilson Beaяs Premium Member

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  3. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Buy a cheap multimeter ..... your battery may be charged but if its been discharged a ton of times and is old , it wont hold enough to get the bike started.

    Pull off 1 plug cap at a time pull the plug , stick it back in the cap and lay it on the head .... crank it over and look for a nice blue coloured spark .... preferably done in dim light.

    Also pull the hose off the carb and see if theres fuel getting to the carbs. (not at the same time u are spark testing!)

    Until u get a new filter , try starting it without one.
     
  4. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

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    You might of flooded it or the battery has lost cranking amps, I flooded mine and killed the battery trying to get it to start recharged it and start ya bastard and got it to kick over now it starts easily. But I still have a carb blockage.
     
  5. Wade Wilson

    Wade Wilson Beaяs Premium Member

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    Well, I'm giving it a rest for tonight.

    It went from coughing but not starting, to not even coughing, and then back again. The carby was well and truly flooded, so we drained it, still wouldn't start.

    Initially we thought it was the spark plugs/leads but they were sparking. Also, How strong is the spark supposed to be, because it seemed pretty weak.

    After we drained it, we pulled the carby, drained it and using some petrol in a spray bottle, we managed to get it to cough again. It coughed and sputtered a few times once we got the carby back on, but now it's gone to crap again.

    I'm now pretty sure something has gone wrong in the carby, because it's flooding way to easily now.
     
  6. Willrcr15

    Willrcr15 Well-Known Member

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    It's a long weekend for some of us & hopefully you too so there's time clean the tank, it could be rubbish in the tank getting through your in line fuel filter if it's got one?
    Flooding can sometimes be caused from rust / rubbish from the tank getting under the needle in the carby & not allowing it to shut off, via the floats, when the bowls are full.
    Take the tank off & empty it then remove the fittings under the tank that the hoses push on to, there should be long brass tubes up into the tank with plastic gauze strainers on the ends of them, they will give you an indication of how clean your tank is.
    Work your way through the fuel system to the carbies last, replace the filter with an OEM, paper or brass, get a couple of cans of carby cleaner for when you do them, it's the best, & blow them out with air pressure. Strip the carbies bare, ie all the brass jets & make sure they're clean & open, you have to be thorough.
    Use new properly fitting flat blade screwdrivers to get your jets out, they are easily stripped
    Good luck
     
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  7. Wade Wilson

    Wade Wilson Beaяs Premium Member

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    Well, after pulling apart the carbie, and cleaning it, readjusting everything and putting it all back together. After a week of trying to diagnose it, I made a discovery that Cylinders 2,3 and 4 were sparking but Cyl 1 wasn't and Cyl 4 was very very weak.

    After swapping leads and plugs, I figured it must be the coil, but I can't seem to find the right replacement coils.

    Ebay has nothing, neither does gumtree. Only thing that I can find is the CDI Unit.
     
  8. kiffsta

    kiffsta Senior Member

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    I have a few sets of coils if you need them, before buying them, trim the coil lead and make sure the cap is on properly... could be an easy fix
     
  9. Wade Wilson

    Wade Wilson Beaяs Premium Member

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    I've done all that, but no luck.

    Is there a difference between the coil that goes to cyl1-4 and the coil that goes to cyl 2-3?
     
  10. kiffsta

    kiffsta Senior Member

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    Nope, same type of coil, just fed from different wires on the harness
     
  11. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Do a resistance test on the coils with a multimeter
     
  12. Wade Wilson

    Wade Wilson Beaяs Premium Member

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    Ok. So after about a week of procrastinating, i finally assembled everything. I tested all the leads and spark plugs, and all 4 cylinders are sparking. I put new fuel in the fuel tank and cleaned out the bad fuel that was in the carbs, charged the battery and tried to start her and nothing happened, she tried to turn over, but there was no cough or splutter.

    This is confusing me now.
     
  13. ajverma

    ajverma Active Member Premium Member

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    This might be silly but since you've been playing around with the adjustments on the clutch lever, can I suggest that you put a jumper in the clutch switch sensor so you close that circuit? It might be the case where that circuit is remaining open and the bike is not going to fire while that is open.

    Your problem sounds electrical, and to test I would connect the bike to a car battery (car turned off) and jump the clutch and kickstand switches and clean and rough up the chassis/engine ground on the bike and try again with an external fuel supply (water bottle with 5/16" pipe fitting superglued on)

    If it doesn't run that way, and you know your spark is good, and your carbies are flooding your bike so obviously they are flowing some fuel, check your compression and check your valve clearances.
     
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  14. Mistap

    Mistap Member

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    I brought this bike 2 weeks ago, and after going over everything that has been discussed I found the problem lol I went and got my hands on a new ignition switch and now she's all registered and road legal
     
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  15. Phil

    Phil Senior Member Contributing Member

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    Welcome to the forum, plenty of info here on these great bikes, feel free to post some photo's of your bike, again welcome.:thumb_ups:
     
  16. Wade Wilson

    Wade Wilson Beaяs Premium Member

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    It's been a while. Here's an update.

    After shelving the bike for about a month, I finally got back into her. I stripped the carbs, cleaned everything, drained all the fluids and she still wouldn't start.

    So in a last ditch effort I grabbed a can of aerostart and a new set of spark plugs. and ripped out the irridium plugs that were in her and replaced them with some stock CL9E plugs and he presto, she started and ran like a dream.

    Then the bad things started happening.

    This morning I dropped her and cracked the fairings, I don't think I'll be able to repair them because they've been patched over 100 times already and the only thing holding them together anymore is the paint.

    [​IMG] [​IMG]
     
  17. Moo

    Moo Plodge Racing!!!

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    thats not to bad mate, aslong as its just the fairings, could have been a lot worse. glad to hear you got the bike sorted and started, thats the biggest battle out of the way.
     
  18. Wade Wilson

    Wade Wilson Beaяs Premium Member

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    I gave the bike of a bit of a ride today and she died on me. When I tried to start her again the battery was dead flat.

    Maybe something wrong with the alternator.

    On the plus side, here's a video of her.

     
  19. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

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    Hi wade, sorry to hear you dropped her!

    Do you have access to a multimeter? See this thread to find out how to test your charging system.

    http://2fiftycc.com/index.php?threads/how-do-i-test-my-12-volt-battery-and-charging-system.1794/

    Please note that a bike doesn't have an alternator per se, they use the stator which has magnets and a wound coil to create AC current then the regulator/rectifier to convert that to your bikes usable DC current.

    Do you know what the hose pipes on zxr250s do?

    They send cool air over the regulator rectifier as it get bloody hot.

    I would be checking that connection as they are prone to burning out, after testing the battery with a multimeter.
    image.jpg image.jpg image.jpg
    Even with the burnt wires seem above which ATM actually smoke while this bike is going it still is charging (I think anyway lol)
     
    Last edited: May 21, 2014
  20. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Yea RRs on these are in a **** position

    This is my plug ..........

    Burnt Toast.jpg
     
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