'06 Kat 600 sputters and dies

[AlienSockpuppet]

Been lurking here a long time, quietly absorbing the wisdom of the experts. Now, I've got a problem that I don't know how to begin fixing.

This started yesterday, about a week after I replaced the oil, filter and plugs. I started my bike and opened the throttle for a bit while the engine warmed up. As soon as I let off the gas, it sputtered and died. Now, the engine still turns over, but it's really rough while I give it that first bit of gas, and it dies as soon as I back off the throttle even a little. Also, my tachometer needle lays flat below 3000 rpms now. This apparently started at the same time.

I know the air filter still needs changing, but I can't believe that is my root problem.

I'm not that much of a wrencher, but I can follow directions and I can recognize my limits. I would appreciate any advice on how to start tackling this problem.

Thanks,

AS

[arsenic]

My advice ALWAYS goes to the carburetors. In my opinion, your pilot jets are clogged. I have no idea why they happened when you changed oil and plugs. That may not even be the problem. That causes all the symptoms you're describing.

[jetta90]

Make sure that the plug caps are still making a good connection with the coil wires.......
When changing your spark plugs you would have pulled off the plug caps first (obviously) and they can be quite stubborn to come off. A pull here, a tug there, next thing you know they aren't making a full connection with the coil wires.
Just something to check.

[GregS]

I would recommend rechecking your plug replacement job. Maybe a connection was left loose. An electrical issue would be indicated by the tach acting up.

[AlienSockpuppet]

Thanks for the advice.

I'll check the plug connections tomorrow. Either way, I know the carbs are overdue a cleaning and adjustment. That's already on my short list.