530d injectors

[crisp]

In the process of buy ing a 530d, the car is good to drive, but on talking to previous owner he said there was a rocking motion while the car was ticking over after you had driven it, and that up to 3 injectors had intermittent faults so he traded it. Garage tested the car on diagnostics and nothing showed up, I relayed the information from the previous owner and they tested the car again this time a fault showed up and are changing the injector.
Has anybody got information regarding this problem

[fixedwheelnut]

Could be injectors, check the fuel return leak off rate, if its too high the loss of high fuel pressure via the return can cause misfires, also if the seal at the injector base is poor cylinder pressure loss can also cause misfires but if it is a sporadic fault its more likley to be the first.

[bigpow]

Alas only BMW do the injectors and user from another forum had the same problems . pull the trousers down time at the BMW work shop