What can cause a BMW e46 to misfire?
Faulty wiring Your car combines fuel and air in order to properly fire the engine. When spark plug wiring is not functioning properly a chain of events occurs, which is often the case, where the vehicle is not able to adequately combine the fuel and air, causing the engine to misfire.
What causes a misfire on 2 cylinders?
There are many factors that can cause a cylinder 2 misfire—the most common of which are the following: Fuel delivery issues (e.g., a faulty fuel injector or damaged injector circuit) Ignition system problems (e.g., a failed coil pack or worn spark plug)
Why is my e46 running rich?
This could be due to leaking injector or a stuck open pintle supplying too much fuel. exhaust back pressure, blown TWCC, misfires, large intake or exhaust leak (Large air volume).
What causes a misfire in a BMW engine?
A misfire happens when the cylinder fails to fire at all or fails to fire at the proper time. This occurs when there is a lack of fuel, oxygen, or a spark to ignite the air/fuel mixture. When one of the three pieces are missing or lacking it can result in engine misfires.
What does p1345 mean on BMW cylinder 2?
When one of the three pieces are missing or lacking it can result in engine misfires. We’ll leave it at that to avoid getting overly technical. Again P1345 indicates a misfire on cylinder 2. You may also receive misfire faults on multiple cylinders. This is an important aspect to tracking down the actual issue at hand.
What causes isolation on cylinder 2 in BMW?
These are the problems that generally cause isolation to cylinder #2 alone. Each cylinder uses its own spark plug, ignition coil, and fuel injector. Spark plugs and ignition coils are by far the two most common causes. They’re both standard wear and tear items that become less effective with age and mileage.