knocking in idle on 2005 BMW 325Ci

while in idle there is a knocking or ticking sound

1 answer
Can be a few things, exhaust leak, injector ticking, lifter ticking...best to have a mechanic listen it, they will be able to tell you more after listening to the noise.
Here are some in your area: http://repairpal.com/directory?address=10701&car_brand_names=BMW