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So I'm trying to figure out what's wrong with a Bandit 400 that is currently in my possession.
As far as I know the only performance mods are a slip on. I think the carbs are stock. I'm waiting on a call to let me know if the PO rejetted it.
When the bike is warmed up and at idle, if you blip the throttle to WOT, it will stumble, and often die just off idle.
When running down the road, if you crack the throttle open, the engine bogs. It will slowly accelerate on what feels like two cylinders. After a few seconds, I can feel a third cylinder start to come to life, intermittently. Then, a few seconds after that, the fourth cylinder comes on line, and the engine starts screaming and pulling well.
The fourth cylinder doesn't start firing until about 8k rpm.
I haven't opened anything up and have only put Sea Foam into the tank.
BUT...
If you pull the choke all the way, the bike will idle at 4k rpm. If you take off with the choke pulled, it does move a bit better, but you still get the same symptoms as above.
I have my theories, but they're weak at best. What say the more experienced members here?
As far as I know the only performance mods are a slip on. I think the carbs are stock. I'm waiting on a call to let me know if the PO rejetted it.
When the bike is warmed up and at idle, if you blip the throttle to WOT, it will stumble, and often die just off idle.
When running down the road, if you crack the throttle open, the engine bogs. It will slowly accelerate on what feels like two cylinders. After a few seconds, I can feel a third cylinder start to come to life, intermittently. Then, a few seconds after that, the fourth cylinder comes on line, and the engine starts screaming and pulling well.
The fourth cylinder doesn't start firing until about 8k rpm.
I haven't opened anything up and have only put Sea Foam into the tank.
BUT...
If you pull the choke all the way, the bike will idle at 4k rpm. If you take off with the choke pulled, it does move a bit better, but you still get the same symptoms as above.
I have my theories, but they're weak at best. What say the more experienced members here?