WR 400, noisey top end. NORMAL????

6 replies to this topic
  • ridinredneck

Posted June 07, 2007 - 01:46 PM


99 WR400F. I notice a little noise ( kinda rattling) coming from the top end, especially when i lug it a little. Is this normal for them?

  • bushy

Posted June 07, 2007 - 01:48 PM


are you sure its just not chain slap?

  • ridinredneck

Posted June 07, 2007 - 01:56 PM


Nah. But I just read the FAQ's and it said that these engines are noisey by nature. BIG load off my mind. Thanks for the reply

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  • Bshaips

Posted June 07, 2007 - 05:46 PM


mine does the same thing and i was wondering if there is any way to quiet this? Thanks

  • Rich_in_Orlando

Posted June 07, 2007 - 07:40 PM


If the timing chain hasn't been replaced in a while, they get noisy. Then the chain slips a gear and you get bent valves. That happened to my bike 3 or 4 years ago.

I replace them as part of annual maintenance any more. My '99 is on it's 4th timing chain. My bike has around 25-30k miles on it. Matter of fact, I just replaced mine a few months ago and it did get a bit quieter.

  • face_plant

Posted June 08, 2007 - 01:20 PM


if you have a bash plate or metal skid plates it bounces the sound upward also

  • trueblue426

Posted June 08, 2007 - 07:55 PM


Change The Oil


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