My BMW e46 always jumps on cold starts for a minute then clears changed coil pack and plugs and vacuum pipe to mass always code say cylinder 4 misfire could it be the injector
My car has 94000 miles.
My car has a manual transmission.
|Ignition Coil Replacement||$116.03 - $516.36||Get a Quote|
|Spark Plugs Replacement||$96.63 - $636.71||Get a Quote|
|Fuel Injector Replacement||$379.42 - $3631.88||Get a Quote|
|Fuel Pump Replacement||$120.92 - $1186.72||Get a Quote|
|Engine is misfiring Inspection||$79.99 - $89.99||Get a Quote|
Hello there, many faults will cause your 2003 BMW 320i to run poorly on cold start and have a cylinder 4 misfire. You have done great in replacing the coil packs, plugs, and vacuum pipe. Common faults would be a fuel injector, fuel pump, vacuum leak, wiring harness fault, or a ECU fault. A qualified technician, such as one from YourMechanic, will be able to diagnose your cylinder 4 misfire and perform any repairs required to resolve the issue.
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