How do I set points

Discussion in 'Mechanic and Repair' started by grass disaster, Dec 25, 2019.

  1. grass disaster

    grass disaster LawnSite Gold Member
    Messages: 3,119

    I have a Lincoln continental f163.
    I just rebuilt carb figured I'd set the points too.

    I believe the gap is .019.
    It looks like they are at about .03 now...eek!

    There seems to be only one point in distributor.
    The question

    Do I need to find top dead center? Or if they are open then they are open? Their normal function they close then open to the gap setting???

    My first time doing this.
     
  2. Mac-s Lawn & Snow

    Mac-s Lawn & Snow LawnSite Senior Member
    Messages: 360

    Look down in the distributor and there should be four lobes in there if its a 4 cylinder. turn engine till its on one of the lobes. now set the point gap to .019. If you are not using new points you can use a fingernail file to freshen them up a little before you set the gap
     
    Cam15 likes this.
  3. BigFish

    BigFish LawnSite Fanatic
    Messages: 5,464

    Ferget TDC.
    Ya need to concentrate on the point cam lobe profile.
    Pull the plugs so you can turn the crank by hand/wrench.
    Slowly turn till points are wide open ie: on the highest point of cam lobe. Set gap. Turn over a few times and re-check gap.
    Might as well clean points before ya set gap, right. Or slap in a new set with condenser.
    It would behoove ya to google up a service manual fer yer motor to double check gap spec. Gap affects timing ya know.
     
    Breezmeister likes this.
  4. Mac-s Lawn & Snow

    Mac-s Lawn & Snow LawnSite Senior Member
    Messages: 360

    Male sure when you loosen the screws to adjust the gap you dont disturb the angle at which the points face the lobe. This is called point dwell and if you lose the dwell you will have to find someone with a dwell meter and can remember how to use it
     
  5. Skeeterman

    Skeeterman LawnSite Member
    Messages: 127

    U can also use the cover of a matchbook if all else fails or a dwell meter.
     
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  6. BigFish

    BigFish LawnSite Fanatic
    Messages: 5,464

    Breezmeister likes this.
  7. zlandman

    zlandman LawnSite Senior Member
    from Ohio
    Messages: 888

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  8. dboyd351

    dboyd351 LawnSite Bronze Member
    Messages: 1,142

    But whar's the fun in that?
    Then you don't get to amaze your friends by setting the gap with a matchbook/business card.
     
  9. zlandman

    zlandman LawnSite Senior Member
    from Ohio
    Messages: 888

    Well, if we wanted to dial in the points with precision I got just the tool to do it! Sun Engine Analyzer. This will help fine tune the dwell.
    20191229_220936.jpg
     

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