Is there any tests that can be done to check if my engine is damaged? Bike was serviced 2 days before I bought the bike and had an oil change. A few days ago on m62 to Morley and my oil nut ( or whatever it's called) popped off without me knowing and how long it was pouring oil I have no idea. Bike slid across lanes and was Lucky not to fall off. Took it to jordons bikes for a oil change ect they said it was ok. But the bike now feels like it's not right. It's stalled twice, feels like it's lacking power under 45mph, not as much power when coming off the line, exhaust is louder, having to twist harder to get the req power, when taking corner it feel to lack some power when coming out. Any advice would be very nice