powervalve and exhaust goo

[harleyrob2000]

I am kinda new to the 2-stroke arena. I am getting alot of black oily goo from my powervalve tube, and from my silencer. I jetted it a little leaner. The plug looks good. I adjusted the fuel/air screw / no change.

How much black oil is normal to come out of there??? The bike is a 2002 yz250

Thanks

[MATTXR250R]

I have never heard of a powervalve tube?? My Honda CR250R doesn't have a powervalve tube. I have a cover on the left and right sides of the cylinder. I can take the right side cover off and I have spooge all on the linkage parts which is normal..on the valves themselves that are in the exhaust port get carbon deposites on them and after awhile it makes them stick and they have to be took out and cleaned.

[Yardpro393]

yep, you will get goo, we call it spooge. the synthetic oils leave less, but it is part of riding a 2 smoke. don't rejet just becuase of the spooge, as long as your plug reads good, then you may want to try a different oil. also what ratio?

[harleyrob2000]

I figured it was normal. It just seems like alot of spooge. On my powervalve there is a drain tube that runs down to the bottom of the bike. I am running Maxim super M 40:1. Could I possibly need more oil like 32:1???

[KTM250rm393]

The kawies and suzuki's have a vent tube off the powervalve that vents spooge.

I think its a fact of life. I noticed less spooge when I went to a full synthetic oil and ran 92 octane gas.

[nevada6]

dont forget that your powervalve has some orings and an oil seal (like a rubber coated washer),, maybe some of those are worn and allowing excessive oil and pressure to get by. at least mine has all that. go to bikebandit.com and see an exploded view of parts in your cylinder head and see if you can order some new orings and seal.

[ossagp]

I have not run Maxima so I am not sure if it is more prone to oiling than other brands. Jetted with the float set right , I wouldnt worry either as one respondent suggests. It just means that you are getting oil where it should be.

If you are new to two strokes it may seem excessive. If mine was not running a little bit down the tubes at least I would be worried.

So if you are not fouling plugs and are happy with the way it runs responsewise, just ride it and enjoy it.

[MATTXR250R]

WTATM(Welcome to All Things Moto)Andy,I think Mikey told you about us didn't he? Glad to have you here buddy.

I for one out of the 2 oils I have used in my CR250R do think that Maxima has more spooge run off than the other oil I used. I was using Pro Honda HP2 and switched to Maxima Castor 927 and it seems to spooge more..runs out the end of my silence and then drips off on my swingarm..the HP2 did also but not as bad and i mixed at 32:1 with both oils.