smoke out exhaust on decel

It's probably valve seals but if the bike has miles on it, you're best bet is to pull the complete top end off and freshen it up....

Paying for gaskets twice and having to do the job twice will really grind you down....

Larry C

This may be dumb, but I'll throw it out there anyway. The oil level looks slightly over filled. Now that I think of it, I slightly over filled it at the beginning of the season. It's not extremely overfilled, but it is overfilled. I'll investigate whether or not there is gas mixed in when I drain it next spring or maybe this fall. Could overfilling cause this issue? I just drove it back to work and no smoking at all like usual on shorter cooler runs.

freebyrd24 wrote:

This may be dumb, but I'll throw it out there anyway. The oil level looks slightly over filled. Now that I think of it, I slightly over filled it at the beginning of the season. It's not extremely overfilled, but it is overfilled. I'll investigate whether or not there is gas mixed in when I drain it next spring or maybe this fall. Could overfilling cause this issue? I just drove it back to work and no smoking at all like usual on shorter cooler runs.

investigate whether or not there is gas mixed in when I drain it next spring or maybe this fall

This may be dumb

Yep.

Good Fortune!

freebyrd24 wrote:

This may be dumb, but I'll throw it out there anyway. The oil level looks slightly over filled. Now that I think of it, I slightly over filled it at the beginning of the season. It's not extremely overfilled, but it is overfilled. I'll investigate whether or not there is gas mixed in when I drain it next spring or maybe this fall. Could overfilling cause this issue? I just drove it back to work and no smoking at all like usual on shorter cooler runs.

The idea is Not dumb at all. If you have the stock air box on it and the crank case vents into it, yes it will allow oil into the breather box if the crank is overfilled.

If it's smoking whitish blue on throttling down like you said, that could very well be your problem. As the filter becomes contaminated with oil it will naturally increase the suction and would result in excess fuel being drawn in, along with some oil.

You'll be getting blue smoke from the excess fuel, and white smoke is of course oil burning. Just pull the top off and air filter out of your breather box, and check for excess oil residue on the filter and inside walls of the box.

If there is a fair amount of oil either puddled at the bottom of your air box, or on the filter and walls, just drain some oil out, or change your oil and replace it with the proper amount, unless you want to blow seals and such. chuckle.

Not correcting it soon could prove to be dumb. :silly: