Started having trouble starting when it started to get chilly outside. Would turn over and turn over but take forever to fire. So i replaced the spark plugs and wires because the old ones were pretty dirty. Its a 4.0L and the firing order i have is correct, its printed next to the fuel injectors. Now it just turns over and over and doesnt fire up at all. I also checked the gap of the plugs and on my intake manifold it says to gap them at .035 in. Also put a brand new distributor cap on it. Anyone help me please?