Man that sucks.
Could you please detail how to make the bike sump. Mine has slumped twice. Dealer has installed latest oil pump and has instructed me to stress test it as hard as I can to see if I can make it sump. Any guidance would be very much appreciated
Here's how I come to the conclusion that I can make any M8 sump. Its a set of riding situations and temps that has taken awhile to figure out. I never did it exactly on the stock 114 form and wished I had. I have a 25 mile loop I enjoy riding. Its a combination of nice twisties with steep inclines, sweeping turns around a reservoir, then 10 miles on an interstate and than more twisty back roads back to my house. Last night I road that loop 2 times ...easy.....and the bike felt terrific. No signs of power loss or overheating. I regularly checked the radiator fans to see if they were running and the engine was cool, no issues and I was smiling as the ride felt great. At the last minute I figured I would do a third loop.
5 miles into the 3rd loop, the engine felt just "a hair off" the performance of the 1st 50 miles but I figured it was my imagination and my sensitivity to the the previous sumped engines. So I kept riding, nothing radical, just enjoying the curves. On the Interstate, I was doing 80-85mph with the traffic flow before the exit to the final 15 miles of backroads. The throttle response slowly got worse and worse. At every stop sign the fans were blowing where they weren't on the first 50 miles. Within 5-10 miles of my house the throttle response went to nothing. I could roll the throttle and it would barely accelerate. Engine was screaming hot.
I pulled it into my garage on level ground and let it idle for 2 mins. I shut it down and pulled the dipstick. Very bad burnt oil smell which you could smell throughout the garage. Where it had been perfectly full when I left, it was now 5-6 rows of dots low on oil, which is more than a quart low in less than 250miles. Even crazier, I let it sit overnight to cool down. Pulled the dipstick this morning and the oil was in the same place I left it last night but you could still smell the burnt oil on the dipstick. I turned the engine on and let it idle for 2 mins per SB1450 on the kickstand. I turned the engine off. The oil FELL from 5-6 rows of dots low on the dipstick to BELOW the add mark. Serious problem if your oil can DROP to below "add" in just 2 mins of idling on the kickstand. Obviously the latest model oil pump was not returning the oil from the crankcase to the pan at the same rate it was being pumped to the top end.
My view is its really just a matter of time. A stock bike might take 4-5 of those loops, maybe more but eventually sumping would show its ugly head. That's just my opinion based on my experience with 3 sumping engines. Its all a matter of time, load & temps.