CT46, I just wanted to add my two cents in... I have just had the same problem with my new MDS 40 engine. I am new to this hobby and have read a lot of messages on this board about the problems with MDS engines. So, I tried to get mine started and after 3 hours of trying, one trip to the local hobby store(that gave no improved luck) and two days later, I finally got it to start and run. The engine was on a board at that time, so I let it run through 2 tanks of fuel one night and three tanks of fuel the following night at whatever speed it wanted to run at first, then constantly changing the speed towards the last few tanks of fuel. Today, I placed the engine back in the plane and it starts and I was able to adjust high and low speed needles correctly. So, with my expirience over the weekend, I now see why people want to throw these engines away at first, but all it takes is continued patience and a little luck. I am now convinced that these engines are great engines (after comparing it with my friends OS .40), but they require a lot more time than most engines to break in. So CT46, just let the engine run at whatever setting it wants to run, then after a couple tanks of fuel, get it adjusted correctly and you will be amazed at the results... I hope this helps a little and good luck...


-John Foshee