Weird noise under the hood, any help

how many km on her?

 

seems too young for engine problems. maybe start with the egr circuit and intake manifold. does she burn any oil?

 

Timing chain, that runs between the crank shaft and the two cam shafts at the top, is in there, behind a cover. it has tensioners and what not.

I would hold off; the cure could be worse than the condition. Timing chain cover seal and reinstall is VERY tricky, and in tight quarters. Just monitor for a while longer.

 

Mendel could be on to something. Some cars with long timing chains use hydraulic oil pressure to apply tension to the timing chain. I did one many years ago and all it was was a piece of dirt clogged a small orifice not allowing the tensioner to work.

 

Which motor. ???????

 

maybe try a different weight oil?

 

or heavy water?

 

Save that for the Ford Fusion.