Knocking noise when idle...

[Maggiore]

Test drove a 182 today and noticed that when I was sitting in idle it made a bit of a ticking/knocking noise seemingly coming from the exhaust? it wasnt too bad but didnt seem normal.

Has anyone got any idea what this could be and is it serious?

Thanks

 

[jon_d_h]

Could be that one of the exhaust brackets has snapped or the engine mounts have warn out.

 

[Jonff]

The only time I've heard a ticking sound on RS's is when the engine is off and the exhaust is cooling down. That's only on the standard exhausts by the way.