Great place to conk out......in the middle of a show arena! I thought I had run out of fuel, but transpires there was enough of that, but (virtually new) spark plug was not sparking. Replaced with the old one which sparked fine and fired up the motor. That was a duff Champion Copper Plus L82C and I THINK, bought from a reputable supplier and not some cheap eBay wallah. "Made in France".........are they getting their own back? Anyhow, the Champion probably lasted about 5 miles, which makes expensive MPP......miles per plug. . Back to my NGKs I think.