Oil Burning Smell - 748

Check the bottom of the sump the vertical cylinders zorst runs directly underneath it

 

could be rocker cover gasket, quite common also check oil pressure switch, also a common problem.

 

yes mate, pressure sensor just unscrews 22mm if i remember correctly and rocker covers have a metal gasket under them, 4 6mm allen head bolts hold them on.

 

no worries let us know what you find

 

Could be something daft,like the oil filter being a little bit loose,allowing a drip onto the exhaust.

 

I'd say the same as cookster it could be the oil pressure sensor , does the oil light flicker on the dash and check for oil splashed on the inside of the right side fairing .

 

Any oil that runs down the cases will tend to go to the centre of the sump, and as mentioned, the exhaust is directly under that area and when the oil hits it you get smoke from the burning oil.

How much you get will be an indication of how much oil is dripping on to the exhaust. If it's constant then you have a leak or strong seepage. If it's just a "puff" of smoke then you have maybe just a drip or two hitting the exhaust and then burning off, so then the smell should die away.

Either way it bears investigation to make sure you are not losing a serious amount of oil.

All the above points where it might leak should be checked and you may also have a leak from where the two halves of the crankcase join. Check the bottom crankcase screws to see if you have seepage through one of the holes where a bolt goes into the two halves. I have this on one of my bikes and it comes from a screw hole, it is just a drip or two that forms after a week or two of standing and it burns off as soon as I run the bike and it gets hot, after that it is fine.

 

I had a leak from the clutch centre oil seal, the oil would drip out of the clutch basket and onto the exhaust - also made the clutch slip though.

Also the crankcase breathers are prone to leaking a little oil which, again can run down to the exhaust...