when to adjust valves?


4 replies to this topic
  • mrbigblock

Posted June 06, 2007 - 06:18 AM

#1

i have a 99 yz400 i just bought. i have rode it about 4 hours and it had a little valve noise and was very strong now the noise is gone and it seems to lack top end. do i need to adjust the valves? are they getting tight?

  • torqueme

Posted June 06, 2007 - 10:40 AM

#2

The only real answer to your question is - pull the valve cover and check them. It takes less than an hour & you will have peace of mind either way.

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  • 642MX

Posted June 06, 2007 - 01:23 PM

#3

i have a 99 yz400 i just bought. i have rode it about 4 hours and it had a little valve noise and was very strong now the noise is gone and it seems to lack top end. do i need to adjust the valves? are they getting tight?


Hard starting is a good sign the valves are tight. They should make some noise when they are set correctly.

Like torque me said, take the time to check them to be sure. :thumbsup:

  • racinteach

Posted June 11, 2007 - 08:52 PM

#4

how about a very loud noise...when hot...and hard starting and constant dying?

  • grayracer513

Posted June 11, 2007 - 09:27 PM

#5

Check them, already. If they're out of spec, it's time to adjust. :thumbsup:





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