In loving memory of Kenis D. Keathley 6/4/81 - 3/27/22 Loving father, husband, brother, friend and firewood hoarder Rest in peace, Dexterday

BG55 No Start

Discussion in 'Chainsaws and Power Equipment' started by lukem, Oct 26, 2015.

  1. lukem

    lukem

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    I have fuel getting into the cylinder...and spark....and compression. ..but she still won't even pop. What next?
     
  2. cnice_37

    cnice_37

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    You probably know more than I do... but FAST - fuel air spark & timing - did your key get sheared?

    Check the exhaust for carbon buildup... swap plugs.
     
  3. lukem

    lukem

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    Swapped plugs from the trimmer and same thing. I didn't check the key but I suppose anything is possible.
     
  4. Bret Hart

    Bret Hart

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    Some info on that power head for the BG.
     

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  5. MasterMech

    MasterMech The Mechanical Moderator

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    Canuit valve is probably chooched behind the muffler bearing. See if the capacitance of the blinker fluid has been altered off its factory spec and check for termites in the backplane.
     
  6. lukem

    lukem

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    Probably the Flux capacitor dun chit the bed.
     
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  7. DexterDay

    DexterDay Administrator

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    Getting fuel and having enough fuel are two different things.

    How old is the unit? Fuel line is a likely culprit? Carb clean would be on the short list of things to do as well.

    Have you tried to prime the carb with fuel?
     
  8. KaptJaq

    KaptJaq

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    When I have a small engine that refuses to pop I usually put a little starting ether in via the air intake. If that doesn't pop then there is a real problem. The ether usually runs rough for a few seconds and loosens up whatever the problem was.

    KaptJaq
     
  9. lukem

    lukem

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    It is about 4 years old. Plug gets wet it I tug on it enough.
     
  10. MasterMech

    MasterMech The Mechanical Moderator

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    Then it should fire at some point. I would say you either have a VERY plugged exhaust or inadequate spark. Compression was verified with a gauge?
     
  11. lukem

    lukem

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    Exhaust is fine. I didn't test with a gauge but it feels the same as it always has. How do you know if your spark is strong enough? Never had a weak spark issue...:confused:..but I've heard of them.
     
  12. MasterMech

    MasterMech The Mechanical Moderator

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    Without a gap tester, I'd check the air gap from the flywheel to the coil and remove the kill wire to eliminate any switch or grounding issues.
     
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  13. super3

    super3

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    s-l400 (Small).jpg
     
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  14. DexterDay

    DexterDay Administrator

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    Nice tool. Mine is a simple spark tester. I love how you can adjust that one!! :thumbs: