BMW E87 N43 engine injector faults
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What is done about a leaking injector on the E87 N43 engine?
The injector cannot be reconditioned; a new or good used injector is fitted instead. The new injector must be coded to the car with diagnostic software so that its values match the car. Injectors with different indexes are allowed in the cylinders.
Why does one cylinder run erratically on the E87 N43 engine and the correction values fluctuate?
The cause can be an injector that works warm but not cold. Then one cylinder's correction values fluctuate strongly. Replacing the injector with a new one got the engine running also when cold.
Where can I get a new injector for the N43 engine?
New injectors are available from some parts dealers, for example with part number 13537589048. The condition of used injectors varies, so there is always a risk with them.
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