Odd intermittent clicking sound at start up

[Emcd]

Here's the situation: only does it when it's cold/er, it's not the cat shields, it sounds like a rotational clicking that speeds up when I'm driving. Eventually it goes away after the car is fully warmed up. I checked the fan and it's not making contact with anything. Could it be the starter plunger not pulling back completely? It's a 1998, 145k, original starter.

 

[benjawi4]

Leaking exhaust manifold(s)

 

[Emcd]

My buddy has the leaking manifolds and this sounds nothing like it. It sounds like a baseball card in the spokes of a bike. That type of clicking,

 

[bmw635]

I was going to say same thing, leaking manifold, or stuck/ worn valve shim?