Metal Shavings in Filter


5 replies to this topic
  • FriscoKLR

Posted October 09, 2008 - 04:29 PM

#1

I got a bunch of metal shavings in my oil filter. They're aluminum or at least non-magnetic. No shavings in the oil that was drained. None in the valves all spec. No shaving beneath in the timing cover either.

There was a few shavings in the clutch but none of the shavings are either clutch material. Runs great, no noises, any ideas before I pull the basket and look into the bottom end.

  • grayracer513

Posted October 09, 2008 - 07:46 PM

#2

The sudden appearance of large aluminum shavings usually means something was dragged between a rotating assembly and a case somewhere. Could be a number of things.

  • yz480doinwork

Posted October 09, 2008 - 07:59 PM

#3

found sand in my oil before:( it roasted my cam chain. all of a sudden my motor just wouldnt turn over. took it apart and the cam chain would hold its form no matter what direction i held it. new cam chain and a few bottles of contact cleaner and i was up and running again. if the shavings are in the filter and there were no small ones in the oil..and its still running of coarse you should be alright.

hey frisco i see your sig says you have a turboed nytro..rock on dude...i got a supercharged apex...cant wait for the snow to build. in fact its snowing out side right now!

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  • ya_nervous

Posted October 09, 2008 - 08:52 PM

#4

ya could be anything. just keep an eye on your next couple oil changes. If it gets worse watch out for engine failure. I would think most likely some piston wear since that is what is most vulnerable

  • llamaface

Posted October 10, 2008 - 06:02 AM

#5

Some bikes will start to shave metal off the cases when the cam chain wears enough that the tensioner runs out of adjustment. I personally would try to find out what the problem was now, not just keep riding and hope for the best. If it's the cam chain, and if it gets loose enough to jump a tooth or two, bad things can happen to your wallet.

  • grayracer513

Posted October 10, 2008 - 06:17 AM

#6

ya could be anything. just keep an eye on your next couple oil changes. If it gets worse watch out for engine failure.

Not very good advice in this case.

Some bikes will start to shave metal off the cases when the cam chain wears enough that the tensioner runs out of adjustment. I personally would try to find out what the problem was now, not just keep riding and hope for the best.

I agree, the problem needs to be investigated. The chain issue you cite is not at all common to a YZF, however. The most likely cause of something like this in this case is a broken gear tooth or other part that has gotten dragged through the parade of gears in the primary case. Another occasional problem is the bearing retainer screws in the crankcase. These have been known to work loose and will be raked along the crankcase side wall. It could also be a problem with the oil pump.

Whatever it is, don't just let it go.





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