I´m looking for a tip. It sounds good and idles smooth. We use the motor in short races and when the motor-temperatur gets worm the engine looses power. It needs just about 1 Minute after start. The sparks look very good. Our special problem is not to be allowed to open the engine or the carbureter.<br />We´re amateurs and take part in races just for fun. We want to prove that our engine don´t work correctly. We need that for our german motorboat club who is organizing the races and gives the motors to the drivers. <br />So we hope you will help us with some fine tips.<br />Many thanks <br /><br />sven