Originally posted by BillHarris
What about a leakdown test? That is a common and useful diagnostic with larger engines, and I can see it's applicability with model engines.
--Bill
It might tell you something on a large 4stroke ringed RC engine. The leak down test is really geared more toward 4stroke engines with all the valves, valve seats, valve stem guides.
The absence of valves and the interference fit at TDC of the typical ABC 2stroke don't lend themselves well to this kind of testing.