by NowForThe5th on Sun Oct 16, 2022 2:56 pm
All diesels make a bit of a tapping noise, so it's hard to know, from here, what yours is.
Could be tappets out of adjustment, SCV or any of a dozen other things.
Best thing is to take it to a mechanic or dealer and get them to track down where the noise is coming from. A stethoscope will help to at least find out whether it's coming from the engine, top or bottom or from one of the ancillaries.
The rev limiting in neutral sounds like an engine protection mechanism. If it revs out in gear and on the road then I wouldn't worry about it.
Chris
If work is so terrific, why do they have to pay us to do it?