Page 1 of 1

White smoke from exhaust on new to me 2004 crf50f

Posted: Sun May 27, 2012 5:17 am
by Daali
I bought my son this used 2004 CRF250F. Mods that I can tell it has are protaper bar kit and UNI filter.

It has a bit of white smoke on take-off and if he is at low-throttle.

I cleaned the air filter to make sure it wasn't oil from the filter. I changed the oil and plug, just because the bike is new to me.

It still persists. Do I need to change the rings?(I have never done that before). Is there a walk through?

How much smoke is troublesome, as can I get through the summer riding and do the fix in the winter?

Thanks for the help!

Posted: Sat Jun 09, 2012 4:38 am
by Daali
Well I don't think it is the rings anymore. Compression tests out to 165PSI. Bike runs very solid. I am guessing it is valve seals now.

I'm going to do a little carbon clean up and see if it gets worse.