I understand there are a few gearheads running about this little old place. Rather than go to an actual motorcycle forum, I decided to go to you - cause I wuv you SO much!
Let's say, hypothetically, that you have a motorcycle. Let's say you go through a series of events as such:
1. You crash your motorcycle. Only cosmetic damage is apparent.
2. Upon return from the emergency room, you hit up the bike. You find that it runs, but does not idle properly. You turn the idle screw, effectively 'turning up' the idle, until it runs properly - and it does run properly.
3. You leave the bike in a bikeport for about three weeks while you await the parts needed to make it look pretty again - and while you wait for your f!$@ing knee to heal up so you can bend it again.
4. After installing all the cosmetic bits (including a turn signal, which means you've played with some of the wires in the 'lectric system), the bike refuses to turn. She'll crank, but she won't ignite.
5. Naturally, being the good icrontian that you are, you check your fuel by turning the petcock. Sure enough, good clean fuel comes out. You drain the carbs and allow them to refill, then check again. Yep, she's got fuel.
6. Hoping it's not spark, you spend a frustration-filled day trying to figure out how the ever loving hell to get your spark plugs out of that freaking tiny motor - upon removal, you attach both plugs to their wires and ground them against the engine. You turn the engine - yep, you've got spark.
7. Noting that the engine is acting suspiciously like the killswitch is on, you pry open the killswitch and check it with a multimeter - nope, the circuit is still complete. Killswitch ain't the deal.
What would you do, icrontic? Naturally, my next move is to check the air, but as I've replaced the filter recently, I reckon it's sitting pretty. Assuming the air is good, some googling shows people suggesting 'testing the timing' and doing a compression test - I've no idea how to do the former, and need to buy the tools for the latter.
I have a hunch that messing with the idle screw did some uncool things, but the idle screw works post-mixing, right? Is it remotely possible that this could have screwed things up?
What next, icrontic?