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White smoke on start up


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Been getting a puff of white smoke on start up but with barely any oil usage.

I read this thread, where some with the same symptoms have found it to be either o'rings on the back valve cover or  the two o-ring seals on the head covers for the PAIR valve air joints.

 

Does anyone know the part numbers for both sets of o'rings? I live in Spain now and trying to explain to the local dealer in my hick town will not be easy so would rather go in with the numbers.

TIA

 

 

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Leaky valve guide seals will generate Smoke during start up and
downshifting and it is not normal...

 

As you roll off the throttle and decelerate the vacuum in your intake
manifold is at the highest point... any Oil that seeps pass the
valve stem seals will travel into the intake manifold and then burn in
the cylinder producing smoke...

 

Pear into thee intake and note a build up of burnt oil on the valve...
new valve guide seals will cure the problem...

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My bike produces a *lot* of 

12 hours ago, Oregonian said:

White smoke on start up can be pretty normal.  Smoke reported from riding buddies behind the bike typically isn't.  

This.  Water vapor looks like "white smoke."  My VFR produces a *lot* with a full exhaust (catless and mufflers).  Stock pipes are labyrinthine and do not produce nearly as much.  
 

The thread the OP is linking to is talking about blue smoke while running.  Definitely oil.

 

If its a puff of white which goes away once warm, and is not linked to any other "thing" or transient event, then you're 99% likely ok.

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Thanks for your input all.

 

I may have confused matters by stating it was white smoke then putting a link to a thread about blue smoke........sorry! 🙂

 

It was definitely white smoke upon start up, from either hot or cold.

 

Yesterday I carried out an oil and filter change (I had 5w30 in there and have gone back to 10w40) and it's stopped! So weird! could the different grade oil have caused the issue?

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Maybe some water got in the oil? 

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On 6/23/2022 at 10:12 AM, Laraza66 said:

Thanks for your input all.

 

I may have confused matters by stating it was white smoke then putting a link to a thread about blue smoke........sorry! 🙂

 

It was definitely white smoke upon start up, from either hot or cold.

 

Yesterday I carried out an oil and filter change (I had 5w30 in there and have gone back to 10w40) and it's stopped! So weird! could the different grade oil have caused the issue?

 

Possible.  It's unlikely, but not unheard of, that something nefarious is afoot.  I would say just ride and monitor critical systems.  Perhaps you got lucky. 🙂

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On 6/23/2022 at 7:12 AM, Laraza66 said:

Yesterday I carried out an oil and filter change (I had 5w30 in there and have gone back to 10w40) and it's stopped! So weird! could the different grade oil have caused the issue?

 

Technically speaking No...

 

Are oils are graded by gravity flow, formally called Kinematic
Viscosity (KV) in accordance to ASTM D-445... its important to note
that this test is not a measurement of an oils thickness nor an oils
weight... its a measurement of time required for a fixed volume of oil
at a constant temp to flow under the force of mean old Mr.Gravity...
The rate of flow is expressed in Centistokes (cST)... the lower the cST
number the quicker the flow which means quicker revs and more power

and there is no difference in longevity between grades...

full-45634-35394-viscositytest1.jpg

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WARNING LABEL: Refer to Shigley's Mechanical Engineering Design, Chapter 12, or a qualified Mechanical Engineer before taking any advice on lubrication from this thread.  🤣

 

For the OP...no, not related.

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