[thezone135i]

Hey guys, I just bought a 2011 535i for the mrs. Car has only done 36,000km (22,000m). I'm loving the car as a cruisy sport saloon although it badly needs more grunt which hopefully an ecu tune will fix.

My question is, when I unlock the door there is a loud rattle coming from the engine, I imagine its something to do with the fuel pump primer or something but it doesn't sound good. The noise only lasts for a about 1 second and doesn't happen all the time.

Also when I start the car it sounds real rattly in the upper engine for about another second before it settles down and then the rest of the time the car drives perfectly. Any ideas? Could it be the HPFP, wastegate?

Cheers

[ezaircon4jc]

Originally Posted by thezone135i

Hey guys, I just bought a 2011 535i for the mrs. Car has only done 36,000km (22,000m). I'm loving the car as a cruisy sport saloon although it badly needs more grunt which hopefully an ecu tune will fix.

My question is, when I unlock the door there is a loud rattle coming from the engine, I imagine its something to do with the fuel pump primer or something but it doesn't sound good. The noise only lasts for a about 1 second and doesn't happen all the time.

Also when I start the car it sounds real rattly in the upper engine for about another second before it settles down and then the rest of the time the car drives perfectly. Any ideas? Could it be the HPFP, wastegate?

Cheers

My '12 has that same, rattly noise on cold start-up. I'm led to believe it's the wastegate and totally normal. I even asked my SA and he said it was normal... I've driven the car almost 40K miles since I got it almost 2 years ago and that sound has not led to any adverse condition.

[STR8-6IX]

Originally Posted by thezone135i

Hey guys, I just bought a 2011 535i for the mrs. Car has only done 36,000km (22,000m). I'm loving the car as a cruisy sport saloon although it badly needs more grunt which hopefully an ecu tune will fix.

My question is, when I unlock the door there is a loud rattle coming from the engine, I imagine its something to do with the fuel pump primer or something but it doesn't sound good. The noise only lasts for a about 1 second and doesn't happen all the time.

Also when I start the car it sounds real rattly in the upper engine for about another second before it settles down and then the rest of the time the car drives perfectly. Any ideas? Could it be the HPFP, wastegate?

Cheers

it could also be your valves. how often to you change your oil and what weight do yo use?

[shan_y33zy]

On my e92 335, I had the rattle as well. My cousin had the same car but hers didn't rattle. They replaced turbos once. Then after they said wastegate bolts were "loose" causing a piece of loose metal to shake causing the noise. So they "tightened" them. Noise came back a few days later

My 535i has that rattle upon cold start as well. And after the cold start if I drive it and shift into second, and let off the gas, it rattles as the rpms are coming down.

Super annoying sound to be claimed to be "normal" in my opinion for the price tag of the vehicle.

[thezone135i]

Originally Posted by 6IX-F10-N52

it could also be your valves. how often to you change your oil and what weight do yo use?

I just bought the car 2nd hand so no idea.

Originally Posted by shan_y33zy

My 535i has that rattle upon cold start as well. And after the cold start if I drive it and shift into second, and let off the gas, it rattles as the rpms are coming down.

Super annoying sound to be claimed to be "normal" in my opinion for the price tag of the vehicle.

Jeez I don't have any rattles like that when driving which is good. I bought the car form a second hand dealer so it has a statutory 3 month warranty. ill book it in to BMW pace and get a diagnosis.

These cars new are $140k here so rattles being normal is simply unacceptable!

[STR8-6IX]

Originally Posted by thezone135i

I just bought the car 2nd hand so no idea.



Jeez I don't have any rattles like that when driving which is good. I bought the car form a second hand dealer so it has a statutory 3 month warranty. ill book it in to BMW pace and get a diagnosis.

These cars new are $140k here so rattles being normal is simply unacceptable!

Change your oil with some good 5w30/5w40

castrol, liquidmoly, motul and see if the rattling subdues. then you will know if it is turbo or valves.