Step 1: Get a really really clean chop stick.
Step 2: Remove the heat sink.
Step 3: You realise the smoother end of your chop stick? Just push ur piston down with it.
Step 4: Light a match and hold it real close to the combustion chamber.
Step 5: Replace your heat sink.
Volia! You have your engine started! If it dies off, go to step 2 and repeat. The trick is to do all the above at the same time! You'll have to be really familiar with the performance characteristic of your chop stick!
Note: Not for novices!