Question about VTwin Horizontal OHV Engine with Electric Start 670cc GX Series

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Why is my 24 hp fouling one plug and smoking. What could be the fix.

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Sounds like it has a bad cylinder and the oil bypassing is fouling up the plug in that cylinder. Do a compression test on the cylinders to see if they are both the same and match what they should be. If it a bad ring that is causing the problem it will have to be rebuilt. Check the cylinder walls to see if it is worth rebuilding before you spend too much on it

Posted on Mar 14, 2011

  • gphox Mar 15, 2011

    What kind of compression should be on each cylinder. What is the spec. measurement for the bore. thanks

  • tiltdeck Mar 15, 2011

    Sorry but i don't have that info at hand but I am sure if you look online at the manufacturers website or email them you will be able to get it.



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