Car Details:
stock
x-drive
manual
93,000 on it.
I just recently bought this car. It's quite a beauty. It's also my first BMW, so I'm learning quite a bit here in how to do repairs and maintenance for one, and have run into my first quandary. The car had been running well, until just the other day I noticed sudden power loss and engine stuttering. What quickly proceeded was a Drivetrain Malfunction error, which stated I could drive moderately.
I took it to the nearest auto parts store to get the code read. It showed Cylinder 5 Misfire. So, first thought and suggestion was for spark plugs to be replaced. So, I did that. I noticed some corrosion on some of the coil packs but nothing too seemingly out of the ordinary with them, (also seeing as how there was just one cylinder which showed a misfire at the start of all this).
I bought a whole new set of 6, Bosch Fine Wire Double Platinum Spark Plugs
Part #: ZR5TPP33S pre-gapped (and it’s worth mentioning, I didn't verify the gap, but should I have?), and, if so should the gap be different than what is factory preset, and be then set to what gap?
I didn't use any anti-seize like suggested, but should I have used dielectric grease?
ALL the plugs taken out were in pretty rough shape and clearly needed replacing, especially Cylinder 5's- completely black, (to note-dry, but) smelled of fuel.
I made sure to correctly seat all the coils after placing in the plugs.
Thinking this would solve everything, I started it up, and ugh same symptoms of rough idle, jittery and inconsistent engine power.
Took it back to get code read and... NOW ALL 6 Cylinders are misfiring, what in the
So, I am appealing to the forum and the experts here as to what I may need to do next. I am trying to avoid bringing it into a shop if possible, as I have enough basic knowledge, the internet, and the tools to do most all basic to intermediate repairs/servicing myself, but... this is a new car for me, and it's a BMW, (not a honda civic si, like my previous car was).
I have all new cylinder packs on order to arrive Sunday, anyone feel this could be the cause now that new plugs are in? Or something more nefarious?
Thank you all.