After a ride or two the dip stick tells me it needs an couple of ounces. It did this twice this season...normally I never need to "top up". But...after the last two rides...all looked OK in terms of oil level. I am consistant in the process of checking the oil...IE a good ride...stop the bike on level ground and within 30 seconds I have a clear reading on the dip stick.
I asked the guys I ride with if they notice any sign of blue exhaust coming from the bike when were on the trails and they say no.
WHen I started last week from cold (about 55 farenheit) after 2 weeks of sitting... it blew out some messy black fumes just briefly immediately after start up (choke on...several estart tries) but also a bit of blue smoke as well when I tweaked the throttle a couple of times. This went away very quickly as it started to warm up. Not sure if I should ascribe this to "burning oil" in a real way or just to the fact that a well used '04 has sat around for a few weeks and was cold on startup.
Looked at it with a knowledgeable guy I ride with and he pointed out that the head has already been removed at least once based on a small tab that extends out from the front of the head gasket..see picture below...his conclusion was that this was not the OEM headgasket..therfore the head must have come off at least once.
My questions is....is this "gasket tab" a definite sign that the head has been off at least once and that therefore the valves/valve guides etc have likely been replaced at least once...OR is this gasket "tab" just part of a standard OEM head gasket?
Trying to gauge the likelyhood of how much long term wear there is on the valve components to try and decide if I should seriously think about spending the money to rebuild it....It is an '04 after all....and I am a little reluctant to tackle a job of this complexity myself even though that would make it a lot cheaper.
Any thoughts/ideas/musings/speculations welcome.
Edited by travertt, October 24, 2012 - 08:59 AM.