Posted July 13, 2002 - 05:19 PM
I have started to foul plugs om my 2000 Wr 400. I know what your going to ask and yes, I have done all the YZ mods and carb job and this has been done for over 1 1/2 years with no problems.
I remember problems with CDI's on the YZ side but not ours. My bike fouls plugs every ride now and my mechanic in PA has said that he has 7 other bikes with the same problem. Now, most are 2001 and 2002 YZF's but the CDI change has fixed 4 so far.
I searched the old posts and didn't find anything current on the topic. So are these bad boys a problem and if so what is the best brand to replace it with. Because the thought of buying another piece of junk from Yam. with no warranty since it is an electrical part enoys me.
Also, if anyone has the Yam. part # for the odometer hub spacer replacement I would apprec. it. I hacksawed the hub open to use the spacer inside the plastic, and it is rusty now and my dealership has now ordered the wrong spacer twice.
Posted July 14, 2002 - 09:26 PM
No air restriction and I have replace the air filter also. The reason I'm sure it is the CDI is that if I put a new plug in, it runs like a raped ape. Then when it sits and I go to ride again "bang" fouled plug and tired leg from kicking.
My mechanic also has too many other bikes with the same problem and he has gone through every bike and nothing checked out bad. He and I discussed the CDI potential cause, and a few hard core racers he services just said to order it and put in on. Of course the bikes are fixed.
I'm just afraid of spending $200.00 for more junk.
Thanks for all the help anyone can give me.
Posted July 14, 2002 - 12:34 PM
Have you checked your TPS (throttle position sensor)?
Posted July 14, 2002 - 06:28 PM
This is the wr ignition with the grey wire mod vs. the 400$vortex.
Posted July 15, 2002 - 04:04 AM
What about the blue wire mod? I think I saw somewhere to try this if you were having trouble with fouling plugs. I believe it effects the ignition in neutral.
I have not tried it yet but anything is better that changing plugs all the time.