First things first, pull out the spark plugs and look at them all. Oily? Stink of gas? Covered in black soot? Clean/swap them.
Try running the bike now. Any better? If yes, you're good to go. If not, try this:
This works only if its got coils and spark plug wires, not the coil stick on plug type.
Take a timing gun, and hook up the inductive pick up on one cylinder, and start the bike. Switch it from cylinder to cylinder and see if all of them are receiving spark. If two aren't getting spark, see if they are hooked up to the same coil pack. If possible, switch the coil packs, and see if now the other two cylinders go dead while the current two spring to life. If so, dead coil pack.
If not, then its time to inspect the carbs.
BC.
I didn't do it, I swear.
And even if I did, what makes you think I would admit it to you?
Try running the bike now. Any better? If yes, you're good to go. If not, try this:
This works only if its got coils and spark plug wires, not the coil stick on plug type.
Take a timing gun, and hook up the inductive pick up on one cylinder, and start the bike. Switch it from cylinder to cylinder and see if all of them are receiving spark. If two aren't getting spark, see if they are hooked up to the same coil pack. If possible, switch the coil packs, and see if now the other two cylinders go dead while the current two spring to life. If so, dead coil pack.
If not, then its time to inspect the carbs.
BC.
I didn't do it, I swear.
And even if I did, what makes you think I would admit it to you?