2000 wr 400 spudders at low rpms
Posted December 20, 2010 - 09:35 AM
Posted December 20, 2010 - 01:05 PM
Did you try unplugging (not unscrewing and removing) the TPS?
Posted December 20, 2010 - 01:25 PM
Posted December 20, 2010 - 01:44 PM
You need to spend a few hours and read the owners manual and get familiar with your bike before you try to repair it. After you have read the book a few times and know what is what on the bike, unplug the TPS like I suggested and test ride. Get back to us with what you find out.
If you do not have a manual, it can be D/L from Yamaha Here.
Posted December 20, 2010 - 02:14 PM
Posted December 21, 2010 - 11:40 PM
Wha??? Why? It's not even fuel injected?!?!?
Posted December 22, 2010 - 07:05 AM
It detects the throttle valve opening and sends a signal to the computer inside the CDI. "The microcomputer in the CDI unit detects the engine speed and throttle position, thus determining the optimum ignition timing through the entire operating range. In this way, quick throttle response can be achieved according to various riding conditions." (taken from service manual)
Posted December 22, 2010 - 07:10 PM
Posted December 23, 2010 - 01:23 AM
I hope you didn't remove the TPS.?? You just have to unplug the wire connector going to the TPS. If you completely remove the TPS, you run the chance of loosing power and performance even if it is reinstalled. At least that is what the manual says. Can you clarify?
I took off the TPS and it still studders maybe a little less.....What next?????
It would also help to know what mods have been completed, and your jetting settings, if you know them.
Posted December 23, 2010 - 07:58 AM
Posted December 23, 2010 - 09:24 AM
Posted December 23, 2010 - 11:02 AM
Posted December 23, 2010 - 11:25 AM
Posted December 23, 2010 - 01:31 PM
Not yet but i will this weekend thanks any other problems with the 2000? Does the header pipe at the motor suposed to get red hot when you worm it up?
Yes...the pipe will glow red when the bike is idling. This is absolutly normal on the WR..do not worry about it....or avoid looking at it. Either way the result is the same...no problem!
Posted December 24, 2010 - 12:41 PM
Thanks for the pipe info.....
I pulled the carb cleaned the jets- Cleand up the spark plug- cleaned the filter- made sure the fuel line was clear- I tried the stock baffle the after market baffle and no baffle and it still has the same problem...........What next