Get the Warrior to the dealer right away. It's only one month over and bike has only 7K miles. My experience is that the dealer/Yamaha may still fix it under the warranty. If they won't, I'd change the oil, add SeaFom to the oil, and just ride it. Maybe a sticky ring or dried out pushrod head seals. Gool luck and let us know what happens.

 

oil can only be comming from a couple of places, the rings or the valve guides. warm it up & do an open throttle compression check. at borrom dead center stick an inspection flashlight into the spark plug holes & check for scoared cylinders.

 

Are you sure its oil and your not overly rich ? Also, and i know this sounds silly but change your oil to another brand and be extra careful not to over fill it. I had an FZ1 that did the same thing. and i changed from Yamalube to Moble 1 MX4T and the problem went away, and stayed gone forever.. just some simple things to try
SMZ

 

Is this definitely blue smoke, cause I think SMZ is right on, I have noticed the Warrior seems to run real rich at startup, wife bitches every time I leave to door between the garage and house open and warm the bike up just outside the garage. In the winter under 40F, I even notice a little smoke, but it goes away within seconds.

Let us know what you find out.....

 

mine has always smoked a bit on initial startup, which stops when the motor warms and the ecu leans the mixture. I'm not sure this is abmormal

 

Maybe I will have to change the oil again. I switched from Mobil 1 to Castrol synthetic because the store was out of the Mobil.

I did check the compression, but I did it cold, and had 145# in both cylinders. This is on the low side, but I thought it would be OK because the engine wasn't warm. Maybe I will have to try it again warm.

Mine has always run a bit rich on startup, but lately it has been Smoking. I was totally surprised by the cloud I saw recently.

TJ

 

Castrol synthetic is your problem, It has all kinds of funky additives in it, But some MX4T for your bike, but before you change the filter ( thats on now ) drain all the oil you can out, Add four quarts of cheap oil, ride around the block get the engine good and hot, and then dunp it out, ( you can save this for car use or something ) then add a new filter and Oil. that should fix you bike up. NEVER use a car oil in your bike, the additives are murder
SMZ

 

Steel, kinda strong words, lots of people run auto oil without problem. One of the most popular oils for bikes is Mobil 1 red cap. Thats what everyone calls it cuz they keep changing the name. What additives are you talking about?

 

I used Mobil 1 "red cap" in my FZR1000 for most of it's 36,000 mile stay. I had the motor torn down at 32,000 miles to fix the second gear syndrome only to find that the motor still looked almost new. The valve lash was still well within factory specs and had never been adjusted before. This bike was ridden hard. I sold the bike last year and it's still going strong. In my opinion, synthetic oil is the best for air cooled bikes like the Warrior. Synthetic doesn't break down under heat like petroleum oil does. As long as the oil of choice does not have the motorcycle unfriendly anti-friction additives that the manual talks about and it is rated API service SE, SF, SG or higher, car oils are fine.

 

In my opinion, of course.

 

The oil debate is always long winded. Fact is, unless we're talking the newer energy conserving type oils (which I'd never put in a motorcycle), any oil is just fine as long as it's the proper weight/multi-multigrade IMHO.

By its nature, synthetic oil is almost all additives. But a quality syth oil will outperform any dino oil. That's why they recommend you do not put synth in a new engine as it just wont break-in very well.

Motorcycle oils VS. car oils...it's marketing guys/gals...a way to get we the enthusiasts to spend a few bucks more. There are no official studies that show they (motorcycle oils) are superior. If you know of one, please share. Information is power.

As to why that engine is smoking on start-up...could be a few things...

Your running that home-done-filter on the side of the bike. If it wasn't oiled (K&N), or the seal it has to the airbox is not completely closed, you could have pulled some grit into the motor that's damaged the rings or cylinders. Then you would have a smoker on your hands. I doubt that is your trouble though.

Leaking value guides...might be.

Could even be a fuel issue as you suspect. But if it's blue smoke, I've always been told that was oil.

If your running a much much thinner oil than recommended, then it could be sneaking past the seals as the bike sits and burning off when you start it up. Some older bikes had/have this trouble.

As with all things like this, my advice is, if you suspect something is wrong, take it to the dealer and have them check it out, or at least document it, so if you end up with a major repair it should be covered.
Your bike should not smoke though. Get a leak-down test and a compression test done.


Last thought, just like running an engine too lean is bad, running it too rich can bring it's share of troubles. The excess fuel scrubs the oil film off of the cylinder and lead to premature wear.