RE: Moki 2.1 Engine
The Moki's are great motors. They require some patience to get broken in, after break in they start and run great. Just as Mitch said, once it is good and wet a bump back against compression and it is running. Do NOT use over 5% nitro (actually 0% is ok) and use large fuel line. They do use a lot of fuel but no more than any other large glow motor in their size range. An on board glow is helpful too especially for the break in period, it will help avoid dead stick landings. I initially used a Cline valve, I am not sure it was absolutely needed and have since removed it.