It can also happen if your battery gets low on power and you try to start your engine. The low battery power doesn't have the energy to turn the engine over fully against the compression and it can then fire and send the piston backwards.
It's not just about your engine being tuned correctly, the later engines do it as well, but the strengthened idler gear tower/engine case can take it and stops the damage.
Last edited by PieMan; 05/19/2014 1:03 PM.
