Ok, alongside my 919 is my older GS500E (I have an unnatural love for nakeds). The 500 was recently dropped in the driveway (0mph) by my daughter, and it ran for about 2-4 seconds when down before shut off and put back upright. Once it sat for about 2hrs, I started it up and the oil pressure light came on. Nobody I talk to seems to be able to figure this out. Also, no noticeable sound differences come on when attempting to run (but have only done so in 10 second intervals about twice in an attempt to reprime the pump). Ok, here is what has been done so far:
Oil pressure switch wire properly grounded and circuit continuity checked.
New oil pressure switch orderd (has not arrived).
Removed oil pressure switch and cranked the engine with the spark caps off to check pressure coming from switch/remove trapped air. (This resulted in the hole "drooling" oil instead of spitting or spraying oil. Not sure if it's normal).
Put seafoam into the crank case and let it sit for about 20 minutes. Did not run the engine as a precaution, although I realize it lowers the effectiveness of the seafoam.
Drained the oil and removed oil filter. No metal on the drain plug. No oil was in the oil filter (although it was saturated as if at one time there had been oil running through it). The filter is an open type behind a separate filter cover plate. No oil was in the cavity for the filter, so I assume the seal was fine.
I'm getting a new filter and oil pan gasket. I plan on removing the oil pan to check for metal bits as advised by another forum member. During this time I will check for sludge clogging the sump filter. I would think that the pump could not be clogged due to this, and the pump itself should reprime automatically.
Outside of these steps, can anyone think of what would be causing this or what I should check that I have looked over? It was a very gentle laydown, so I can't see how any serious damage could have been done in a few seconds of running on its side. The only damage was a few scrapes to the left side crank case and gear switch pedal. Also, the oil pump, sump filter, and pressure switch are all located on the opposite side of the laydown.