The spark often "looks" unusual when the plug is just resting on the cylinder head, but the conditions within a running cylinder are drastically different, and the plug may behave very differently.

If you have fuel, compression, and a spark, the motor should run! :)

Have you checked the compression? The NSR can be very hard to start if the compression is low. Also, make sure the battery is 100%. A battery not in tip-top condition and fully charged can cause all manner of problems.

If the motor's been standing so long that little spiders have taken residence in the expansion chambers, try helping things along with a little squirt on carb cleaner down the inlets and a bump start!

Andy.
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