Oil getting past decompression plug hole after hotcams mod

3 replies to this topic
  • MTS II

Posted May 24, 2009 - 09:41 AM


Did the hotcams mod and plugged the decompression hole with one of the plugs off of eBay. After the first ride yesterday I noticed that oil is getting past this plug it appears. Could the o-ring seal on the head be damaged? Seems to happen after riding for at least 30 mins

Thanks for the tips!

  • 642MX

Posted May 24, 2009 - 11:19 AM


You need to replace the seal. It probably got torn while removing the decomp lever.

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  • 02WR426Cali

Posted May 24, 2009 - 11:44 AM


I think you take the seal out when using one of those plugs. The plugs use an o-ring I believe. I just got a new seal and cut up the stock lever to make it look like a plug when I did mine.

  • grayracer513

Posted May 24, 2009 - 12:12 PM


There are two versions of the plugs made for that hole. One uses an O-ring and requires the original seal to be removed. The other uses the OEM seal as the shaft did. How you correct this leak depends on which setup you have.

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