South Wales Trail Riders

    HELP! - wr450f problem

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    RobH

    Posts : 174
    Join date : 2012-05-09
    Location : near zooport

    HELP! - wr450f problem

    Post by RobH on Sun Oct 07, 2012 4:14 pm

    Can anyone tell me how to 'bench test' if a coil is working please?

    I can ride the bike for about 12 miles, it runs like a clock then when it gets hot it cuts out. I leave it cool for a bit and it goes again for a short distance, etc...
    reminds me of an old car when you had to let it cool if the coil was bust and then go again until it got hot.
    - so I reckon it's the coil.

    It's been in a bike shop and they have tested all the electrics and an alternative coil - with no fault being found - but I'm not convinced they got it hot enough to test the current coil.

    Any help gratefully received - or a bike shop/expert recommendation?
    (if not it's try a new coil £100!)
    Cheers
    Rob
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    sheepshagger

    Posts : 261
    Join date : 2011-01-02
    Age : 57
    Location : Newport

    Re: HELP! - wr450f problem

    Post by sheepshagger on Mon Oct 08, 2012 6:49 am

    Are these any good
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    RobH

    Posts : 174
    Join date : 2012-05-09
    Location : near zooport

    Re: HELP! - wr450f problem

    Post by RobH on Mon Oct 08, 2012 6:30 pm

    Cheers mate - do you reckon my diagnosis is a reasonable one?
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    sheepshagger

    Posts : 261
    Join date : 2011-01-02
    Age : 57
    Location : Newport

    Re: HELP! - wr450f problem

    Post by sheepshagger on Mon Oct 08, 2012 6:58 pm

    I wouldn't like to say,but if you want I have a wr250f ,if you would like to bring yr bike to zooport ,you could try mine off my bike to see if it works,it could the spark plug cap I think there is a coil of some sort in there,they are the same part.
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    sheepshagger

    Posts : 261
    Join date : 2011-01-02
    Age : 57
    Location : Newport

    Re: HELP! - wr450f problem

    Post by sheepshagger on Mon Oct 08, 2012 7:06 pm

    take a look at this link it might help

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    sheepshagger

    Posts : 261
    Join date : 2011-01-02
    Age : 57
    Location : Newport

    Re: HELP! - wr450f problem

    Post by sheepshagger on Mon Oct 08, 2012 7:10 pm

    after checking the part No. for the 250 and the 450 it looks like they are different.

    RobH

    Posts : 174
    Join date : 2012-05-09
    Location : near zooport

    Re: HELP! - wr450f problem

    Post by RobH on Mon Oct 08, 2012 7:56 pm

    thanks for the offer 'sheep' & the websites.
    cheers
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    captain caveman

    Posts : 4176
    Join date : 2010-01-26
    Location : Pot noodle land

    Re: HELP! - wr450f problem

    Post by captain caveman on Mon Oct 08, 2012 8:33 pm

    The coil and plug cap are both one part on the wr. Hence no plug lead.

    RobH

    Posts : 174
    Join date : 2012-05-09
    Location : near zooport

    Re: HELP! - wr450f problem

    Post by RobH on Tue Oct 09, 2012 5:18 pm

    OK thanks

    ogri

    Posts : 347
    Join date : 2010-06-08
    Age : 57
    Location : pentyrch,nr cardiff

    Re: HELP! - wr450f problem

    Post by ogri on Mon Oct 15, 2012 3:30 pm

    rob,if you can get hold of a manual (and i don't mean a spanish waiter) there will be a section in it giving you info on how to test various leccy parts.


    at a guess it does sound like coil.whip your stator cover off and check there's no nicked wires or anything.

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    Re: HELP! - wr450f problem

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