Dont worry sounds good!

found the cause of the sound?

The sound of pump in background??

What’s the duh duh sound??

Someone explain the duhh duhh sound ?

Can someone explain what that. Duhhh Duhh sound is? It comes and goes every minute or so . Is it a pump or engine issue?

Heard the same sound. Was there any issue?

hi bro, I have very similar noise on my n47 , did you found reason?

The blowly is normal, there is no smoke from the dipstick hole. That knocking " like" sound you hear when opening the oil cap is the camshaft in action opening and closing the valves.. that is why the ticking sounds. Normal. Enjoy the ride. Good for Oil catch can for your model. And install one if you dont have one.

It is a diesel, it is supposed to sound like that. It is normal. That is why it is called DIesel Clatter!. I think you are new to diesels. The engine seems to sound fine. Good Condition. main tip to maintain a diesel is 1. To extend the life of a diesel, always drive in the rpm range where the max torque is produced. Dont redline it. 2. Drive in low gears high rpm once in a while for few minutes on the highway to burn up the soot , or you will get your cat clogged by carbons( due to driving sedately). it is like manual DPF regernation in modern cars lol 3. Always change all fluids at the right time, especially engine oil. Use the correct weight oil. Dont go too thick or too thin. Change the oil every 7500Kms or less if possible, your engine will thank you. 4. Remember to change the diesel fuel filters at the right intervals, injector pumps and injectors are expensive in diesels, so always keep your fuel clean. 5. Then dust your air filters like once in 2-3 months . it will keep the filter fresh and clean for a long time. theryby saving your Mass airflow sensor related problems. 6. since you said it is an old vehicle, maybe clean all the sensors and reinstall, it will run much much better. Iike MAF , MAP, ARE BETTER TO BE CLEANED. IT IS GOOD TO TEST AND REPLACE CRANK POSITION SENSOR, CAM SHAFT SENSOR, COOLANT TEMPERATURE SENSOR. These sensors are subject to high head and over time they go bad and go off values. it is good to get them tested by a mechanic and replace if necessary. Performance mods 1. EGR blank- Block your egr for only fresh air to get into the engine, you will get much better throttle response and maybe fuel economy ( depends on models). but it will always keep your inside of the engine clean. maybe take the car to a shop and get to clean the air intake manifold and install EGR blanking plates. Google to find EGR block options for your model. 2. If your car is manual, Clutch delay valve Delete is a best performance mod. It is a small valve in the clutch hydraulic system. by removing that you will get much better clutch feel. 3, IF automatic transmission, change your ATF liquid. Changing the ATF every 30,000 kms will always keep your transmission happy.

E92 330xd same sound. it is normal

20.000km since last year and sound is the same on mine. I can clearly hear a knock (think might be an injector even if all 6 are new) when I floor it hard at very low speed. Else no problems at all. checked oil for contamination last 3 times I changed oil and no metal in it nor diesel. So I just drive :)

Completely normal sound. I found that using Red Line 85 plus diesel additive (200ml per tank) quietened it down further.

not 4.0d its 3.0d 30d =3.0d 35d=3.0d 40d=3.0d m50d=3.0d all same engine just different turbo setups

Yea sounds normal on this engines and 535d they done so much engineering... Yea you will hear different sounds from those engines and they tempt to change on outside temperature So yea don't worry perfectly engine sound

did you ever find out if your N57 had a problem? Chain or con rod bearings? I don't hear either.

Sounds like a normal diesel sound to me .. 6yrs owner of a e90 330d 👍🏼

Its perfecet👌

it sounds perfect as it should, mine sounds the same

Some knocking noise

Seems everything fine to me

Just drive it :) Don't be like me , if you listen to every sound you will become crazy :) I stopped asking myself same question after I invested over 4000 eur trying to get rid of some sound only I can hear :)