You can check for spark by removing a plug, (do this at night, preferably, or in a darkened garage.) Using a pair of -insulated- pliers, stick the plug into the plug wire. (The plug needs to be out of the head.) Have someone crank the engine over, and hold the plug electrode 1/8th" from the exhaust manifold or the negative post on the battery. If you see a spark, you have spark.
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