1997 TJ won't start, need help!
Okay, here's the situation. I have a 1997 TJ with a 4.0 and 145, XXX miles. I had an issue with the cat converter and downstream O2 sensor recently so I replaced the entire exhaust system after the header and both O2 sensors. The Jeep drove horribly for a couple of days, it had NO power over 2000 rpm. I replaced the TPS to no avail. I then realized that the air filter I was using was completely clogged. It ran GREAT for a week, plenty of power but, after an oil change I found that I was losing oil at an alarming rate. I changed the valve cover and the oil filter (the gasket on the filter was not sealed to the filter) as well as put a new gasket on the distributor and some PTFE tape on the oil pressure plug and sensor because there was oil coming from that area (which I later realized was the filter seal). Put it all back together and, now it won't start at all. I've been searching the forum and replaced the distributor and crank position sensor. The car and rotor and wires are only a few months old, I've checked each wire, there's a spark. New plugs. My only thought is fuel pump or ECU, or one of my new parts is bad too. I can hear the fuel pump wind up with the key turned to on and the fuel rail purge valve does squirt fuel every time I check it, which leads me to think it's an ECU issue, like I say though, it was running great just 4 days ago. Any ideas?