Hi all. I replaced the engine oil today and after taking of the plastic cover under the enginge to access the drain plug i found a hose. It is about 23 cm long, one end seems to have had a hose clamp and the hole is about 11 millimeter, the over end don't show any marks and that hole is about 7-8 millimeter in diameter. I can just not find any place that missing this. Worth to mention is that the engine for some time have a whine sound following the rpm in frequency. But that is about all. No other indication of any change in performace. Adding a picture, it has a lot of pre made bendings. Does anyone have a clue?
//Mikael