onan 18 hp wasted spark ignition

Ya gotta go much further to get help here unless you are joking. Wasted plea.
 
No spark? Spark plug, spark plug wire, coil, flywheel, points and condenser (older engine), module, Some engines have a coil that run off a battery so it all depends on what you have. motorman is right we need more to go on.
 
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