Misfire

David_avina · 05-12-2023, 07:20 PM

I have a 2007 328i. It started misfiring immediately when I turned on the car when I was leaving school. The oil pressure sensor also came on at the same time, anybody know what could cause this to happen. I know it was leaking oil as well, I know if it was just low on oil so I put some more oil in but it didn’t change anything.
The two codes are

P0301-cylinder 1 misfire
P0521-oil pressure sensor

BashShah · 05-14-2023, 12:51 AM

miss fire is not related to your oil.
Not sure if you can, or are mechanically inclined.
but just swap the coil from 1 to 4.....see if the miss fire follows..

if the code stays on cyl 1, then swap spark plug to cly 3 or some other one.
if the code follows, then it is sthe spark plug else it is something else like fuel mixture.

05-12-2023, 07:20 PM	#1
David_avina New Member 0 Rep 15 Posts Drives: 2007 bmw 328i Join Date: May 2023 Location: Mississippi iTrader: (0) Garage List 2008 bmw 328i [0.00]	Misfire I have a 2007 328i. It started misfiring immediately when I turned on the car when I was leaving school. The oil pressure sensor also came on at the same time, anybody know what could cause this to happen. I know it was leaking oil as well, I know if it was just low on oil so I put some more oil in but it didn’t change anything. The two codes are P0301-cylinder 1 misfire P0521-oil pressure sensor
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05-14-2023, 12:51 AM	#2
BashShah Colonel 298 Rep 2,015 Posts Drives: 2012 335i Sedan Join Date: Oct 2012 Location: Vancouver, Canada iTrader: (0)	miss fire is not related to your oil. Not sure if you can, or are mechanically inclined. but just swap the coil from 1 to 4.....see if the miss fire follows.. if the code stays on cyl 1, then swap spark plug to cly 3 or some other one. if the code follows, then it is sthe spark plug else it is something else like fuel mixture.
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