Darren is right on, with the valve cover off, you can see the pushrods/lifters. On top dead center of compression stroke the piston is compressing the fuel air mixture in the cylinder, at TDC the plug fires igniting the mix pushing the piston down (power stroke now). Next time up is exhaust stroke because the exhaust valve is open and the upward motion of the piston is pushing the burnt fuel/air mixture out. At TDC then the exhaust valve closes and intake valve opens, piston goes down sucking in (kind of like inhaling hence intake) the new fuel/air mixture, at bottom dead center the intake valve closes (exhaust valve is still closed) compression stroke is beginning, at TDC the mixture gets ignited again. Thus you need to identify which cylinder is #1, find both valves for that cylinder and when the piston is at the top of its stroke and both valves are closed, you are at TDC on compression stroke. By the way, that is the four strokes of a four cycle engine! Good luck, can be an intimidating task, but man will it make you feel good when it is done and you saved all that money! Hope this helps.
God and family, the rest is icing on the cake.
I'm so far behind, I think I'm in first place.
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