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Honda gx620 QAF engine help?

5K views 3 replies 4 participants last post by  KyBluGrass 
#1 ·
I have a Lesco 6x6 with a honda GX620 QAF K1 engine. Only getting spark on the front cylinder? I took both coils off and had them tested and both tested good. I have searched where to download a service manual with no luck? Could it be the engine stop diode? Any advise or information on what to do or how to test it would be greatly appreciated?
 
#4 ·
For future reference, ad to hopefully help someone in the future, the CDI ( ignition module) can burn on one side. They can also fail in such a way as to allow the engine to start and idle but not rev or operate.
Deending upon brand type and layout, a bad crank sensor could cause this issue as well. Hope this helps someone.
 
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