Can a misfire cause all cylinders to misfire?
Conversely, something that affects ALL cylinders equally may produce rough running but NOT qualify as a misfire, as there is NO one cylinder affected more than others.
What causes a misfire on a coil on plug?
When the engine cools off overnight, the fuel in the rail cools and condenses, leaving a small pocket of vapor at the highest point in the rail, right next to injector No. 1. Naturally the misfire clears up quickly as the rail fills with fuel, and there’s no reason to chase this problem any further (how could you possibly fix it?).
What to do about cylinder 4 5 and 6 misfiring?
With the eccentric shaft sensor unplugged it does run alot better but i have already replaced that sensor with a new one so not sure what else to do hate throwing parts at it. its a 2009 bmw 328xi You have 2 fuel related codes on top of the cylinder 4,5,6 misfire codes which are all in bank 2. You mentioned that you swapped the O2 sensors.
What is the code for a failed coil?
Neither code is a slam dunk diagnosis for a failed coil. Instead of throwing a set of anything, let’s concentrate on cylinder #5. SWAP positions of 2 coils.
Conversely, something that affects ALL cylinders equally may produce rough running but NOT qualify as a misfire, as there is NO one cylinder affected more than others.
What to do if you have a spark plug misfire?
I suggest first removing and checking the spark plug and swap in a new one or swap with cylinder next to it. This way the misfire moves to other cylinder then you know it was plug and replace it. If misfire still on number one then check for spark and injector pulse and replace injector or coil as needed.
Neither code is a slam dunk diagnosis for a failed coil. Instead of throwing a set of anything, let’s concentrate on cylinder #5. SWAP positions of 2 coils.
With the eccentric shaft sensor unplugged it does run alot better but i have already replaced that sensor with a new one so not sure what else to do hate throwing parts at it. its a 2009 bmw 328xi You have 2 fuel related codes on top of the cylinder 4,5,6 misfire codes which are all in bank 2. You mentioned that you swapped the O2 sensors.