2010 3.3l Dodge Grand Caravan. No Start

My thought is your running rich. Maybe a fuel injector leaking? With a fuel pressure gage, turn on the key, let pressure build, turn off the key, some makes and models, the pressure should hold for a bit. If it drops like a rock, check for fuel leak. Also, a problem with coolant temp sensor may cause it to run rich. After you fix it, you need to change oil and filter as many times as it takes to get rid of the gas. Just my opinion.