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Project 1991 CB250N

Discussion in 'Your 250cc Projects' started by Stubanger, May 9, 2017.

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  1. Stubanger

    Stubanger Well-Known Member Premium Member

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    20171221_223232-600x800.jpg
     
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    Last edited: Dec 21, 2017
    Stubanger, Dec 21, 2017
    #21
  2. Wozza

    Wozza Active Member

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    check the ignition switch connections in the head light...it also uses the green and b/w wire to earth out the cdi when key is switch off..check the continuity of the b/w wire from the ignition switch and ground, should have continuity when key is off and none when key is on....also check the black/white wire hasnt shorted anywhere.....
     
    Wozza, Dec 21, 2017
    #22
  3. kiffsta

    kiffsta Senior Member

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    how is your earth strap ? Is the harness properly earthed ?
     
    kiffsta, Dec 22, 2017
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  4. Stubanger

    Stubanger Well-Known Member Premium Member

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    Thanks to all for the replies. I'll be back in the shed this weekend for more diagnostics!

    Edit: If i do ever get it running, i'm taking it on a ridiculous road trip!
     
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    Last edited: Jan 11, 2018
    Stubanger, Jan 11, 2018
    #24
  5. Joker

    Joker See "about me" for contact details. Contributing Member

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    I have some reasonable rear shocks, a coil and a couple of bits that you can have for the price of postage from VIC to SA and a 6 pack if you're interested. Just want them out of the shed now.
     
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    Joker, Jan 11, 2018
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  6. Stubanger

    Stubanger Well-Known Member Premium Member

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    That'd be great thanks @Joker current rear shocks are long gone. PM me shipping/beer $ details
     
    Stubanger, Jan 11, 2018
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  7. Stubanger

    Stubanger Well-Known Member Premium Member

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    ITS RUNNING!!!!!!!

    Moral of the story, dont use chinese cdi units. Paid $120 for a used one,yeah a bit pricey but it works! Now to find all the bits to put it back together
     
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    Stubanger, Feb 14, 2018
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  8. Joker

    Joker See "about me" for contact details. Contributing Member

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    Nice work mate, do you still want the bits?
     
    Joker, Feb 14, 2018
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  9. Stubanger

    Stubanger Well-Known Member Premium Member

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    No thanks @Joker I picked up a newish set of shocks last night from the wreckers
     
    Stubanger, Feb 15, 2018
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  10. Stubanger

    Stubanger Well-Known Member Premium Member

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    All back together, 35km test ride completed. Will give it a proper wash on the weekend. Only other thing to fix is..... Bloody fork seals! 20180215_215140-800x600.jpg
     
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    Stubanger, Feb 15, 2018
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  11. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    my67xr, Feb 16, 2018
    #31
  12. Stubanger

    Stubanger Well-Known Member Premium Member

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    I have seen this mentioned a few times now, i think i might give it a shot!

    In other news, i rode it to work this morning.....20kms later i lost all electrics. Turned it off at work, never to be started again. Maybe that chinese regulator has fried my battery/everything :( the fun continues!
     
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    Last edited: Feb 16, 2018
    Stubanger, Feb 16, 2018
    #32
  13. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Sound's like you need to get the multimeter out and check it over
     
    my67xr, Feb 16, 2018
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  14. Stubanger

    Stubanger Well-Known Member Premium Member

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    After hiring a forensics team for the weekend my multimeter has been recovered......

    Battery is not getting charge, Chinese regulators....
     
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    Stubanger, Feb 18, 2018
    #34
  15. Stubanger

    Stubanger Well-Known Member Premium Member

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    Update: Have now done 550kms, changed the oil again tonight but she still sounds like a truck, cams may be damaged. I am yet to do a compression test.

    Ill change and 135km round trip on a work day, life is good:
    20180301_180018-800x600.jpg 20180301_181531-800x600.jpg
     
    Stubanger, Mar 1, 2018
    #35
  16. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    With the engine noise, have you checked the valve clearance's ?

     
    my67xr, Mar 1, 2018
    #36
  17. Stubanger

    Stubanger Well-Known Member Premium Member

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    Not yet, fingers crossed its that easy but it sounds worse. Ill check them this weekend
     
    Stubanger, Mar 1, 2018
    #37
  18. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Could be a noisy cam chain too
     
    my67xr, Mar 1, 2018
    #38
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