I hadn't seen the video before my last post. The starter seems slow. If you jump it with another battery, does it turn faster? Also, my s-10 had a problem with the bogging like that. It was the fuel pump. It would idle from the vacuum supplying fuel, but would bog when the gas was pressed. Then the idle would go up from the gas that was just vacuumed up.The problem we had is we actually heard the pump running, but the fuel line was broken inside the tank. When you turn the key on, do you hear the fuel pump running? If it is bad, turning the engine for 20-30 seconds will vacuum fuel to the engine then run off of that. It would also explain your idle going up and down. Also, pull your fuel line at the engine and turn the key on and be sure you are getting good gas flow.