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No spark 088

Discussion in 'Chainsaw' started by Pagie, Feb 13, 2018.

  1. Pagie

    Pagie ArboristSite Operative

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    My 088 has not been used for a few months. Was working fine. Today it has no spark. I changed the plug to another that was working in another saw. Still no spark. I looked at the magneto and it looked ok, that is no loose wires or burn marks. What can I look at next? I have not been cutting wood this summer so today I started all my saws up and gave them a run and new fuel and bar oil. But this one was not going to play.
     
  2. Chainmale

    Chainmale NZ

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    Coil? Expensive unfortunately. Had it been hard to start while hot prior?
     
  3. Pagie

    Pagie ArboristSite Operative

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    No, it was starting ok. Not even run in yet.
     
  4. Chainmale

    Chainmale NZ

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    It'd be worth checking the on off switch too
     
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  5. Pagie

    Pagie ArboristSite Operative

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    How do I check the on off switch?
     
  6. Mad Professor

    Mad Professor Addicted to ArboristSite

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    The switch grounds the coil out. Check the short circuit wire from coil to ground using an ohm meter when in the run position. If it's grounded and the switch is not at fault, follow the wire back to the coil for shorts to ground

    As well check your coil wire well for shorts and the connector inside the boot to the plug
     
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  7. HarleyT

    HarleyT Tree Freak

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    It seems harder to see a visible spark these days. Try again, pull the rope real fast, make sure the side of the plug is well grounded against the block, do so in a dark room.

    I'll bet that your spark is just fine.
     
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  8. Mad Professor

    Mad Professor Addicted to ArboristSite

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    OR........

    This is somewhat dangerous and not recommended! Try at your own risk!!!

    You can get someone to touch the plug and touch the cylinder when you pull the recoil. OWWCCHHH!!!!! if you have spark

    Only use one hand, finger on plug thumb to cylinder, current only goes through hand. If the spark travels up you arm through your chest it can stop your ticker/heart
     
  9. Pagie

    Pagie ArboristSite Operative

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    Thanks guys. I tried to get a mate to hold the plug. He wouldn't do it. I might try looking for a spark in the dark.
     
  10. Thommo

    Thommo ArboristSite Operative

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    Hook a timing light up to it and see if the light flashes
     
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  11. Pagie

    Pagie ArboristSite Operative

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    I checked for spark in the dark. No spark. The switch looks ok will try to find an ohm meter tomorrow. I wonder what a coil costs here?
     
  12. earlthegoat2

    earlthegoat2 ArboristSite Guru

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    Have you checked the wiring from the switch to the coil yet? I know not everyone has access to an Ohm meter or continuity tester but that is really the only way to test the ignition kill switch system without parts swapping.

    Ive seen the wires get worn from rubbing on things around the carburetor. The plug wire could have worn through somewhere as well.
     
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  13. Mad Professor

    Mad Professor Addicted to ArboristSite

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    Not sure if other coils will fit? Universal coil? Others might know

    IPL shows 1124 400 1309

    2017 price $109 USD
     
  14. Mad Professor

    Mad Professor Addicted to ArboristSite

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    Yes either wire can get pinched , especially between tank housing and engine if not routed well or if AV buffers get worn out
     
  15. Conquistador3

    Conquistador3 Le Comte de Frou Frou

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    Before ordering a coil, take a good look at the flywheel: if the poles are blue, that's your problem, not the ignition module/coil.

    Your best bet not to spend a fortune on that coil would be to have it shipped from the US: even with shipping you will probably come out ahead.
     
  16. Pagie

    Pagie ArboristSite Operative

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    Thanks everyone, I will check the wiring tomorrow in the daylight. What do you mean Conquistador3, Blue poles?
     
  17. Conquistador3

    Conquistador3 Le Comte de Frou Frou

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    This is how a healthy magnet will look on a Stihl flywheel:

    [​IMG]

    If it took a blueish color, kinda like a chromed exhaust after a few years too many of intense use, the magnet is toast, and since it cannot be swapped out the flywheel is toast as well.
     
  18. Pagie

    Pagie ArboristSite Operative

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    I took a pic of the magnets, both have silvery patches on them? Is this the sort of thing you mean? IMG_0546.jpg
     
  19. HarleyT

    HarleyT Tree Freak

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    Can you put up a pic of your coil?
     
  20. Pagie

    Pagie ArboristSite Operative

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    The coil pic. The black wire looks a bit squashed. Will get a continuity tester dilxZ8XaSW20%0GFT4byhA.jpg
     
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