Venture misfire?

p300 misfire code

some ideeas about this problem? have changed the sparks ,the coils and control module (another car with the transmision over) but have the same problem...before and after coils change the starter crank and after is going out and turning like a ventilator..is a starter problem?(checked,seems to be good) or the motor is not turning? i have turned it with a key handly ,a bit hard but i don't know how easily must turn to be ok...all fuses ok,spark just on the passenger side coil(but i suposed that's not turning enougth to have on all)batery ok,changed the fuel filter too...it just stoped 1min after i lived my driveway ,some iced snow passed but i didn't see something touched under,so...



ps . same problem with the far away dealer and towing costs...so i apreciate an pro answerVenture misfire?
Did you gap the spark plugs before you put them in? If they are not the right gap they might not fire.Venture misfire?
P0300 mutiple misfire detected means more thean two cilinders are misfiring,if the check engine flashes while driving it could damage your catalitic converter,verify you have good fuel pressure,chek for leaky in jectors,egr valve staying open due to carbon particles check for vacuum leaks,you have done the most you could do you need it properly diagnosed or you will be dumping money into it