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Honda CBR250rr MC22 Project (take 2)

Discussion in 'Your 250cc Projects' started by Phil, Mar 26, 2015.

  1. Phil

    Phil Senior Member Contributing Member

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    Well since last week I have made a point of starting the MC22 daily. Alas the bike seems to dislike early starts and cooler morning??
    Cranks over well enough but simply won't start......nearly draining the battery each day......this is BS.
    It does eventually start......and will do so no mater how many times I try, next morning same old story.
    So today the carbs came off....again!! and armed with all the good stuff I stripped them and cleaned them thoroughly.
    Some junk within but nothing that should preclude the engine from starting???
    Put everything back together and thought I would test it first.......flat battery:mad:
    The upside is there is always......tomorrow:p
     
  2. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Is the battery new ?

    Is it getting enough spark to fire it up?

    How are the cap to lead connections?
     
  3. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Full choke, no throttle, hold your tongue the right way, crank, crank, crank and then take your take your finger off the button (now has full power to the coils for that instant) it should catch, and if not have a cup of tea :)
     
  4. Phil

    Phil Senior Member Contributing Member

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    You got it in one.....well done.
     
  5. Phil

    Phil Senior Member Contributing Member

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    You always catch me out Grey!!!
    Battery is brand new.........and currently on charge
    Test for spark....one was poor so before Grey could get to me....I trimmed a bit of the coil lead....perfect!!!
    The Honda petcock was broken.......currently using a smic one.....???? don't know.
     
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  6. Phil

    Phil Senior Member Contributing Member

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    There is one thing missing and I am uncertain what it's roll is and what it does..........can anyone help.
    There is a large plastic tube coming out of the carbs facing the engine. Normally there is a rubber hose that has a 90 degree bend and a small canister that contains some sort of filter..........hose and canister are missing......think it connected to the vacuum line?
    Any ideas my friends.
     
  7. risky

    risky risky

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    if it is the same as the 600 honda series it is an oil fume breather.
     
  8. Phil

    Phil Senior Member Contributing Member

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    Thanks risky, I simply could not put a name to it, nor could I figure out it's use.....learn something new each day :thumb_ups:
     
  9. Phil

    Phil Senior Member Contributing Member

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    ---MC22 UPDATE---
    Well after a horrid week of draining the battery.....not once but twice and still no closer to getting the engine to start decided to go back to basics.
    Mothers day week-end Chris came up and we got everything sorted with the aid of some news tools (carbtune pro)and others.
    The carbs that were on the bike originally were designated B, however Chris wasn't overly impressed with these and had brought with him another set designated A......so we swapped them over and got the bike running really well.
    That is until the following morning when cold the bike seemed unwilling to start...........but eventually did.
    This situation gradually deteriorated to the point where it simply would not start.
    By weeks end I was a tad over it, checked the manuals to ascertain that I hadn't missed anything and eventually decided to pulled the carbs off.....AGAIN. Cleaned everything.....AGAIN and re-installed for a test run..............drained the battery.....AGAIN!!!!
    Sunday the carbs were removed and swapped with the original carbs and guess what...."Bloody thing roared into life" :D
    Not to tempt fate I went into the garage this morning....hit the button and.....BINGO.....engine started first go :thumb_ups:
    Moral of this story is....nice to have an A but a B suits me fine. :p
     
  10. Phil

    Phil Senior Member Contributing Member

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    MC22 UPDATE
    Have not had the greatest time with the bike............carbs carbs and more carbs :mad:seems to be one issue after another.
    Leaking fuel, blocked ports and the list goes on. So back to the bench, complete strip down again only to discover a few issues not seen prior. Most were quick fixes and time to re-visit the manuals again, a good scan and the end was in sight.
    All the time the engine wanted to start but just couldn't get there......was it getting enough fuel, simple answer....NO!!!!:oops:
    An extra quarter of a turn on the air/fuel mixture and voila.......1st hit of the button and she roars into life. :D
    Ok, she runs real well, little or no hesitation when throttling up.....sounds good and no leaks......life can be good :thumb_ups:
    Also this evening I put the trolley jack under one side of the engine with the bike on the side stand and got the front wheel off the deck, rectified the alignment issue I had which in turn fixed the odd handling, so all in all a big win.:)
    She is done, all we need are some fairings and she be ready for the road. Rewarding to get another back on the road.:thumb_ups:
     
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  11. Phil

    Phil Senior Member Contributing Member

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    Woke up this morning and 1st port of call was the garage........hit the button and she roared into life. :thumb_ups:
    Alas my joy was short lived..........15 seconds she stalled and would not start again???????
    From a high to a low in under 30 seconds......Phil's nightmare.
    "WHY ME" was my thought, got off the bike and looked at the petcock............OFF position
    Turned to ON.....waited a few seconds.....hit the switch and she fired straight up :D
    Life can be cruel at times, but final outcome is GREAT, I need a cup of coffee. Long live the MC22!!!!
     
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    Last edited: May 22, 2015
  12. thebeefsalad

    thebeefsalad Well-Known Member

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    Sounds like when I first got mine back together. Finally ready for a test ride (a bit tipsy the night before...) I thumb the starter, she roars to life, but wouldn't come off idle. Before I could get AHCRAP out I was already looking at the petcock and slapping myself in the face.
     
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  13. Phil

    Phil Senior Member Contributing Member

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    Having had the tank off whilst dealing with the carbs.......simply forgot to switch it back on.:oops: Caused a little anxiety this morning.
    Happy to say that I've started it at least a dozen times since.........hasn't missed a beat.:D
     
  14. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Thats great mate :thumb_ups:

    Are u going to keep it to ride or move on to the next project?
     
  15. Phil

    Phil Senior Member Contributing Member

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    No, the bike is Chris's and my guess he will probably sell it. Still needs a few bits to finish it off, will be a good bike.
     
  16. Hamz

    Hamz Well-Known Member

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    I did that not long ago. Adjusted carb screws. Jumped on to try it out doen the road. And oh crap bike is loosing power wtf? Of petcock is off hahaha
     
  17. Mclaren

    Mclaren Well-Known Member Contributing Member

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    U can sponsor me on it phil at classic next year hahaha
     

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