Posted July 30, 2002 - 05:53 AM
Posted July 30, 2002 - 10:21 AM
I bought my bike on Jul03 and immediately uncorked the exhaust and took the baffle off the airbox. Since I was just starting the breakin, I left the throttle stop alone. After breakin was complete, I popped the grey wire out of the connector, completely removed the airbox cover and began running the bike harder (actually I should say trying to run the bike harder). After 2 weeks of trying both richer and leaner MJ, Jet needle settings, pilot screw changes, etc. the bike still runs like crap! I took it back to the dealer while I still had a warranty and they put the restrictors back on and tell me it is within spec, so I get to pay them for a couple of hours of diag time with no improvement...
Just an FYI for those experiencing similar problems, the guys at the dealer service centers don't seem to have an answer either. Their 'unofficial' response from Yamaha is that the bike needs to run YZ spec settings if the restriction is removed (02YZ426F stock: #42PJ, #162MJ, #EKR needle clip#4). I haven't ordered the YZ carb parts yet, but probably will (from a diff. dealer).
Posted July 30, 2002 - 05:56 PM
I have a question about Ifkerby's post. I thought that the uncorking of the exhaust and removing the air cleaner lid makes the bike run leaner due to more air taken in. The yz mj 162 is leaner than the wr 165. Also what's the difference in jet needles. I always thought by adding the free mods, one might have to jet richer to compensate?
Posted July 31, 2002 - 06:20 AM
Posted July 31, 2002 - 07:03 AM
Posted August 07, 2002 - 10:02 AM
Posted August 07, 2002 - 11:18 AM
it seriously is not worth the agrivation i do not have the time to screw with it so far i have spent 100 more time working on that damn carb trying to make it run than i have riding it i have a whole twelve miles on it make me an offer and it yours
[ August 07, 2002: Message edited by: blacksunday12101 ]
Posted August 07, 2002 - 11:39 AM
Posted August 07, 2002 - 12:00 PM
So for several months its been great...until this week. Kick, Kick, Kick and nothing. I tore the thing apart trying to figure it out. Then I signed onto TT and started reading posts and searching archives. First they helped calm me seeing that others have probs too, but the next thing I new I was pulling the plug and putting in a new one. Started on the first kick. The moral for my story is it can be the simplest things we overlook. I mean come on...I couldn't get it to start and should have immediately thought it was the plug. Going back to my 2smoke days that should have been the first natual thing to check.
Keep posting your situation. There are some really talented people on this board and love to help when they can.
You'll be spewing boulders in no time.
Posted August 07, 2002 - 03:16 PM
Slow down, there are literally thousands of jetting combinations, and unless you know your bike is identical to someone elses you can't just copy.
Make sure you have good fresh gas, clean plug, keep your hand OFF the throttle as you start it.
"running like a dog" really doesn't give anyone any info to help you.
is the bike new? has the timing been changed? is the rear brake adjusted so tight it drags? help US out a little!!
Posted August 28, 2002 - 09:40 PM
[ August 28, 2002, 12:43 PM: Message edited by: blacksunday12101 ]