Saw your earlier thread
How long will an 1150 run , after it's dropped onto its side?
What stops it running if no one switches the engine off? Is it that the cylinder on the ground gets flooded with oil and it stops. Or does it sieze before that point?
Well, assuming the engine is running at a tickover, it could probably run for hours without damage. the oil will gravitate to the low side, and get splashed all over the inside of engine, thus lubricating it satisfactorily for very long periods, even though there will be minimal oil going throught the oil pump.
If, however, it is sitting stuck at high revs, I would expect damage after 20-30 seconds.
The oil will not pass down beyond the piston rings whilst the engine is running, but, if stopped & left on it's side, it will do so after about 30 mins &
make the bike hard to start. If left long enough, ther is a possibility of hydraulicing on startup, unless plug is removed to shed the oil. Most unlikely though.
It is more likely there is/was a small amount of oil in the cylinder, and a larger quantity has seeped into the paper air cleaner via the breather. Either of these will cause smoke on startup. Until the air cleaner is changed & airbox cleaned, there will be large clouds of smoke.
On Christmas day, my son's Mazda 6 diesel blew the turbo, filling the road with smoke. He did not have the sense to stall the car, and it stuttered at the side of the motorway for 5 mins, dumping most of the sump oil into the intercooler. I replaced the turbo, and took the car for a very gentle test drive, ready to stalll it on the brakes if the engine took off, which it did.
After about 3 miles filling the road with smoke, it stopped taking of on it;s own, so I took it to a nearby dual carriageway and drove it 5 miles to Warrenpoint at around 70 mph. The entire road filled with blinding smoke.
Back to Newry, same thing. 3rd Run, smoke eased. 4th Run, now flat out, it all disappeared. Car perfect.
I wouldn't panic about smoke after startup unless the bike revved its nuts off and seized on falling.
Myke
