94pathynewbie

I guess I should make my own post despite there being many others, however I'd like to get some others' opinions on if I should go this route before buying anything. (dang it I just answered it in my own head because I know the answer) When I first purchased my old lady, I had found out later than the EGR Temp Sensor? Maybe wrong name.. was left disconnected by the previous owner. It was completely covered in soot to the point I could not just wipe it off. I have to admit; I did a poor job at cleaning it and basically left it black before I plugged it back in. My question.... Could this sensor just need to be removed again and properly cleaned to clear my ECU code 32, or would the soot not be an issue for this sensor? I should have done it by now, but I suppose after barley putting the plenum back on, I am just dreading taking it off again. Whatever. Anyhow... Appreciate all input from you guys! I'm still learning a lot from this forum.

I appreciate the knowledge. I ended up replacing all 6 of the injectors and the white smoke is gone along with the code 51 that led me to the injector swap anyhow. Now onto a new code after I found out the recent owner had left (probably on purpose or during diagnosis) the Exhaust Gas Temperature Sensor unplugged. Dreaded code 32 *sigh*

So like the title says! I recently bought a 94 pathfinder but I was told it was going to need some work! Short story - the car sat for 10+ years before being started up and also no gas was removed before starting. Myself not knowing any better, I did not question this and drove the car 20~ miles home. Fast forward, I was diagnosing a ecu code 51 (trying to) and assumed it to be a bad fuel injector. So I replaced said fuel injector, got the check engine light to turn off, but then the car started to run horribly after filling up the tank the next morning! Blowing out clouds of smoke, hesitating at stops, and backfiring from underneath the hood. I really hope I didn't destroy the engine by driving it home. Anyways, where should I even start? I have since then drained the old gas out and replaced it with new gas. As well as changed the spark plugs, fuel filter, PCV valve, and the oil. I also changed the spark plug wires because mine were coming apart every time I pulled one. OH AND I changed what I believed to be the faulty fuel injector but that didn't change anything. The smoke coming from the exhaust doesn't smell sweet at all, in fact it doesn't smell like anything and if I had to guess I would say it's water but something else is leading me to believe it's unburnt fuel but again, it has no smell so.... The car has never overheated on me and I haven't been able to drive it enough to know if it's losing coolant, plus it drives terribly right now. Thanks for any help professionals!