HELP!!!wr 426 engine noise & metal shavings in oil
Posted December 17, 2003 - 06:14 PM
Posted December 17, 2003 - 10:06 PM
I am also having the same problem with the silvery looking oil and the metal on metal noise. But I am having another problem maybe you veteran riders can help me with. I to bought a used 02 wr426. When I'm in 5th gear and really getting on it it seems to want to crap out on me. Its like there's a governor on it or something. I had a few people tell me that its a tranny thing and that it needs rebuilt. $600 to start. Any suggestions out there on what you might think is greatly needed.
Slick, thats usually a "secondary miss", look at all the high voltage stuff. The plug wires goes down the long deep tube, crud in ther ecan make that spark jump through the sides. Check plug condition too. If the plug well drain clear? Thats is the little hole on the RH side of the head. Make sures its clear or water wont drain out. On a warm engine, the water will sweat and bead up and create spark leaks. Usually missfire under heavy loads is that.
Posted December 18, 2003 - 01:29 AM
The description of your problem sounds familiar to me.
I had something similar happen to me at a big enduro meeting in august with my 2002 250F.
I stopped the trails and rode back to the pits.
In the pits people rode my bike and said: "chain slap".
I wasn't convinced.
Took of the chain and just idled the engine. The noise was still there.
Came home and started looking at what could be wrong. Drained the oil: lots of metal
Took of the cam cover, timing was still the way it should be.
When checking the timing I had the two plugs on the ignition cover of. That's when I found it!
The rivets on the flywheel (two pieces rivetted together) had come loose.
If I had not stopped during the race the flywheel would have separated creating pure misery.
Sorry If my explanation is too long, just take out the two plugs on the ignition cover and check for play on the flywheel. Hope this helps.
PS If this is the problem, you'll need a special flywheel puller to get it off. My Yamaha dealer lend me his.
Be careful using this tool!! I didn't and had to buy a new stator too because I wrecked it.
Hope this helps.
Posted December 18, 2003 - 07:49 AM
As far as maintanence, you should change your oil more and check your valves (I didn't see that you had done this.). A really good and fairly cheap oil is Shell Rotella T. It can be had for like $6.50/gal at Kmart or Walmart, or you can get the synthetic version for $13/gal at Walmart. I have been using them for years and they are both proven in high mileage street bikes.
Posted December 18, 2003 - 09:32 AM
Posted December 18, 2003 - 03:57 PM
Posted December 18, 2003 - 04:04 PM
Others use shoe goo??? and foam rubber per their posts.
Posted February 05, 2004 - 07:37 AM