I recently purchased a 1993 Isuzo Rodeo 4X4 with the 3.2L V6. The Rodeo is hard to start once it is cold or has set for several hours. When trying to start the car, the vehicle shakes and misfires. I have to give it gas on some occasions and none other times. On some occasions it takes 5-10 trys to get the engine to start. Once started, the vehicle will idle rough for about 20 seconds and then runs fine. I have replaced the spark plugs, spark plug wires, fuel filter, fuel pressure regulator, and had an engine diagnostic. Also replaced the alternator and put in a new thermostat. Not sure what to do next with winter here.