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Thread: More ATC 70 Spark Issues

  1. #1
    Join Date
    Aug 2006
    Location
    Arlington, Wa
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    1,027

    More ATC 70 Spark Issues

    My 70 was running great when I turned it off for the night. The next morning it will not start. The spark plug has a nice fat blue spark when it is held 1/4 -1/2" from the head. When I actually touch the plug to the head, nothing.

    Any ideas would be great, yes I've done a search. The points look to be in good condition.
    Charlie Don't Trike

    85' ATC 350X
    85' ATC 250SX
    85' YTM 225DX (sweetie)
    84' ATC 200 auto X
    85' ATC 70
    85' YT 60


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  2. #2
    Join Date
    Sep 2004
    Location
    Lancaster, PA
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    1,738
    Did you try a new plug? If it is sparking between the plug and the head you have the ability to create a spark but if it not sparking between the tip and the ground on the plug when you put it in the head it will not create a spark... I mean the electric has to go somewhere and it is supposed to arc in the plug gap, if you hold the plug away from the head and that is a path of least resisience then yes it will create a spark there. Make any sense???? kinda tough to explain.

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    1985 ATC 350X
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    1973 ATC 70 (resto project)
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  3. #3
    Join Date
    Sep 2007
    Location
    West Richland Washington
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    430
    Yes what's the best way to check if your getting spark on a 1984 atc 70?

  4. #4
    Join Date
    Mar 2005
    Location
    overton, PA
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    5,257
    ho;d the plug in your hand and pullthe cord if you get zaped you got some fire to the plug lol
    ok here goes, 85 atc70,2 84 atc70's 83 alt50,83 atc110 , 70 us 90 parot green, 85/86 350x garage queen, stock rider 85 350x, project 85 350x 85 250r drag bike, 2 85 250sx's, alt185, , scat tracker?99blaster,85 250r rider,85 250r ice racer project ,93 kx500,99 xr200r, 91 dr250s ,89 lt500 quadzilla,88 lt250quadracer, 88 trx250r race full on race quad,, 01 yamahakodiak400, kawaki kd100,lt50 for my doughters,93 300ex, 230 quadsport, lt185, lt250 quadrunner,84200s, is that enough?

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