Crankcase Breather vs Air Filter
Discussion
ukkid35 said:
The driver's side is badly contaminated and partial disintegrated, I'm guessing with oil that has somehow made it's way back to the air filter. I'll post a photo later.
That's impressive... Don't see how oil should have made it all the way from the crankcase breather back to the oil filter, even if you had excessive crankcase pressure. Any signs of oil in the airbox or big pipe twixt air filter and airbox?I know its not helping to find the cause but i have just ordered a new one for mine from the Pipercross shop on Ebay £17.45 + £5.95 p&p.
My air scoop, below the filter was covered in sticky gunge and muck which took some cleaning but no sign of excessive oil in the pipes btwn filter and intakes
My air scoop, below the filter was covered in sticky gunge and muck which took some cleaning but no sign of excessive oil in the pipes btwn filter and intakes

The gauze in the oil trap at the bottom of the NS air box should catch most of the actual oil and let it go back down to the sump, the fumes get burnt off. Its either soaked through or comletely missing imho.
I've seen NS intake runners with Oil in before heading down towards the filter panel, not sure its that rare, maybe a lack of care to detail when servicing perhaps.
I've seen NS intake runners with Oil in before heading down towards the filter panel, not sure its that rare, maybe a lack of care to detail when servicing perhaps.
HarryW said:
The gauze in the oil trap at the bottom of the NS air box should catch most of the actual oil and let it go back down to the sump, the fumes get burnt off.
Odd, my oil trap is in the Offside airbox. I remove the catch pot and gauze and degrease both quite often.Regards
Simon
Edited by SimonKD on Thursday 19th May 18:45
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