[G21MKN]

Afternoon all,

Wonder if you could assist with some advice and thoughts.

Long story short, I drove my 320d yesterday for the first time in 9 weeks after a double hip replacement. My old man has driven it once a week ish around 30-40 miles to keep it ticking over. Upon load I notice a louder than usual whistle from what I thought was the turbo. I asked him to drive it again today, the good news ends where the whistle seems to have stopped. However on idle and under stationery revving the engine is knocking, a lot. There is also an intermittent high squeal/cheep. Rushed it down to the local garage, he was a bit stumped, thought top of the engine and maybe injectors. He and a specialist nearby can’t look at it for 3/4 weeks.

Car is 4.5 years old on 32000.

Do I take the hit and go to main dealer

Thanks in advance

[Herr Gross Byte]

Local indy might be a better option if you are out of warranty. PMW are good in Chelmsford. If that's too far, post your general area and maybe someone could recommend one.

[Assassin]

Timing chains used to be a common issue on the 2.0l 4 pots but usually at higher mileages. Hard to know but loud knocking never a good thing. Could be injector, cam / tappet problem or even main bearing but that would come from lower in the block. I assume it hasn't been short of oil of run through deep standing water?

Keep us posted.

[G21MKN]

Thanks for your replies. It’s booked in for next Tuesday. Garage thinks it could be a belt liked to alternator, which might also explain why I’m not getting battery charge. 🤞🏻 will update next week

[G21MKN]

So alternator belt did indeed need changing, however this isn’t the end of the issue, the knocking is a different issue. It’s currently being stripped down at BMW as there was metal in the oil.