If its been running rich for a prolonged period of time, there maybe enough raw fuel in the oil to actually dilute it enough to pass through the rings and pump out the exhaust. It has happened to me before, Id go get the 19.99 oil change special from auto zone and try it. Also how bad is your miss? Is it just a light vibration or is it a dead cylinder?
Sorry for the lack of responding guys! Sister had a baby and I've spent the last two days on a plane.
The oil is dirty as hell and unknown weight, so it will be getting an oil swap as soon as possible. The exhaust was on the bottom of my list, but I think I'll go ahead and replace the entire system. I'm sure the cat is absolute garbage at this point.
At one time the car was cared for, but I would say it hasn't felt the love of a gentle wrench in a LONG while. The plugs were all out of gap and quite bad looking. The wires were brittle and fell apart in my hand. So I was quite hopeful that would take care of the misfire. The misfire seems to be only noticeable at idle and light throttle. It is not a dead cylinder. I was leaning towards bad injector till I found this oil issue.
Again, no blue smoke, so I don't believe that oil is entering the cylinder chamber and the plugs are clean. I'm thinking that with the Rich conditions of the fuel (I assume that has alot to do with the putrid un-burnt fuel smell) that it may be leaving some type of nasty in the exhaust. And when combined with the moisture of the air is causing the pipes to spit it out.
Any suggestions on a good exhaust system? The one that's been put on the car now sounds like absolute garbage and has way too much crackle.
Once I replace the 02 sensor and the oil change, and the new exhaust, I'm hoping to remedy most of whats wrong with the engine.
It currently has 154,00 miles but runs like a gem...when it is running that is. Trans seems a bit jerky around 30-35, but that's it for the drivetrain.
The suspension will need an entire overhaul. Luckily I work for a dealership and get $65/hour labor rates. So I'll likely just have the dealership replace everything with provided parts. I'm sure I could do most of the suspension work on my own, but I have a 1.5 car garage with alley parking. Not much space.
I suppose I should notate the end goal with this unit. Money is not much of a concern as this is becoming a project and not a must-drive-daily unit. That being said saving up for an exhaust and similar parts isn't of high concern. I plan on keeping the original engine and tranny till I can't. I just need the damn thing to run perfect, drive perfect, and look perfect.
So for an MN12....that's probably about $32,000 in work, right?