Exhaust Manifold Gasket Leak and click, click noise?

mccsix wrote:
Click click sound is typical for a gas engine manifold leak so I guess it's probably the same for diesel.

On my gas engine I heard various strange noises and ticking was one of them when my exhaust manifolds went bad. Twice.

Sometimes they would make noise on startup and then go away, other times they would show up after the engine was warm.