Originally Posted by Ricardo
Hi Dee Gee
Your Oil pressure switch is leaking from the sealing washer, the oil is then running down the barrell .
The new switch will come with a new sealing washer.
I would still check your Breather pipe as a precaution.
which breather pipe do you mean Rick? I've checked the long one which comes up from the left engine casing and fastens to the top front of the air box. I think there's a non return valve in this one???