peristaltic locomotion

7. Using distractions William with his fantastic friend Jason bring their bicycles to the attic, shrink themselves, and go on a journey. They meet Sir Simon because he is getting ready to leave for a tournament, and they stay at his castle. They spend more time a boy along with a girl at the castle and together. The girl tells them associated with an omen her grandmother, Calendar, kept repeating before she died. Sir Simon sent Calendar away towards the convent as they thought she was crazy and that he doesn't believe the omen. Few accept is as true but Calendar's granddaughter does. Jason and William trust it too. Air filter is blocked so there's not enough air input. There is a problem with motorcycle sprocket, like idling air inlet congestion, then the air input just isn't enough. The oil amount of float chamber is too high, some gasoline go directly into the cylinder without atomization, that may cause incomplete combustion. Main orifice wearout seriously and then this fuel injection from primary nozzle increases, that may cause incomplete combustion. Heating automatic valve is at start position along with the enrich valve can't be closed automatically, that can caused a wealthy mixture. Carbon deposit in muffler, exhaust jam, waste gas stay in cylinder, that can caused incomplete combustion then black smoke.