its mean engine maitenance
the engine size
If you mean aircraft ( a GLIDER has no engine )
the engine is running
That is the capacity of the cylinders in that engine.
A bad engine rod is an engine rod that has misbeheaved.
Yes, if you mean a "Wankel" engine, also called a "Rotary" engine.
When your engine has a knocking noise, it could mean that a rod has been thrown. It could also mean you are low on oil.
would like to help but what do you mean by " folding " your engine ?
it is a old time gas Engine.
it means a 2.3 litre engine
the engine is flooded with gas