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Q: knocking in idle on 2005 BMW 325Ci

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
while in idle there is a knocking or ticking sound
Can be a few things, exhaust leak, injector ticking, lifter to have a mechanic listen it, they will be able to tell you more after listening to the noise.
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