Just started the bike up and noticed that oil was dripping from the L/H exhaust weep hole. It stopped then when I took the reves upto 2000rpm it started again. Anyone with any ideas? Had bike since 2016 and never had this before - it doesn't get much use so has been standing so I expect some oil to be burnt on startup bit not dripping out
I'm not sure what age model this is for, or what exactly the exhaust weep hole is, but I can say that I had oil weeping from the exhaust header port on a bevel which was cured by a rebore and new piston & rings. So, I wonder if it is possible for rings to 'gum up' or bores to glaze when the motor hasn't been used for some time.
Are you certain it’s oil? I suspect it is only condensation (water) mixed with carbon from the exhaust internals, as such nothing to worry about.
Hadn't thought of that. It definitely looks like oil & sits on the floor like oil rather than spreading and soaking in. I'll have to have a closer look.
It's definitely oil - only seems to happen if bike is being revved over 2000rpm but that might just be the oil is getting pushed up the exhaust more. Wondering if a compression test will tell me anything rather than stripping heads and barrels.
That's a good idea as it's easy to do and non invasive. In my case the compression test didn't show a particulary bad reading but it was less than the front pot - don't quote me on this but I recall reading summat like 180 & 150 or so. I also squirted a little oil through the spark plug hole & the subsequent reading was much improved. And remember the throttle has to be wide open when doing this - well at least on a carburated engine.
