Upper engine clank/knock

Car started making a tinny clanking sound. Like something rattling around in a valve cover or maybe the timing chain slapping against the cover. I can't quite isolate it. Any ideas at 65 k miles where I should start? Not too loud when the car is first started cold but when warmed up it is more noticeable. thanks for any responses.

2.7l?

Is it the 2.7?It is the timing chain and get it fixed asap.Do not drive it that way.If the timing chain breaks on a 2.7,the valves bend and it is an interferance engine.I have seen the valve covers broken due to the broken timing chain.An used 2.7 is hard to find,about $1,500.00 to $2,500.00 for an used one with no warranty.

I agree. It will destroy the engine if the timing chain breaks. I would also recommend replacing the tensioner and guides on the chain and if you have the money, the water pump.