- I'm working on a 2012 Sportsman 500 H.O. that won't start. It has spark, a new carburetor with a good supply of fresh gasoline to it, a new fuel pump, and the compression is good (about 148 p.s.i.). Upon checking the spark plug after extended cranking, it's dry! Shouldn't the plug be wet with fuel after the engine cranks but doesn't start? Also, when I prime the cylinder with gas, the engine will start briefly, for about 2-3 seconds. I've made sure all air is out of the fuel lines from the tank to the carb, and seen fuel pulsing out of the supply line when it's removed from the filter right at the carb. So, have any of you had this experience with a similar (or same) Polaris? Have you ever bought a carburetor that was defective or non-functioning right out of the box? It's pretty obvious that there's no fuel being delivered by the carb to the cylinder. I'm focusing on the carb because the ignition system has been gone through completely, and there doesn't seem to be any intervention going on by the electronic safety nannies, like the ETC switch. It does have spark during cranking. Any advice is welcome. Thanks.