Points arcing

Discussion in 'Motorbike Technical Discussion' started by Masospaghetti, Sep 27, 2005.

  1. Visible arcing from the points - what does this mean?

    The points and the condenser are both new.
     
    Masospaghetti, Sep 27, 2005
    #1
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  2. A slight amount of arcing is normal. If points didn't arc, you'd never
    have to file them, you could just use the points until the spring
    wouldn't close them anymore...

    When you installed the points, did you clean the oil off of them? The
    points manufacturers may put some light on the points to keep the
    plating from corroding while they are in stock. So the drill is to take
    a clean white piece of thin cardboard, like a piece of business card
    with no printing on it. Draw the card through the closed points until
    it doesn't get any more black smears on it. You can also use an aerosol
    electrical contact cleaner on new points, followed by the card trick.

    I used to buy what was called a "points stone". Maybe they are still
    available in auto parts stores.

    It was made of plastic with an abrasive coating and it was about 5
    millimeters wide, certainly less than 1/4 of an inch, and it was about
    6 inches long. As I used up the abrasive coating at the end, I would
    snip off about half an inch and continue to use it.

    Ignition condensors can be tested with an analog type ohm meter. Just
    touch one of the probes to the disconnected lead and the other to the
    condensor case. You'll see the needle of the ohm meter flick upwards
    and go back to zero. Reverse the leads and the needle will flick again.

    That shows that the condensor works. Use the R X 1 scale on your ohm
    meter...
     
    krusty kritter, Sep 27, 2005
    #2
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