What does wastegate rattle mean?

When the wastegates rattle it means that they arent sealing properly. That is not true. The “standard” wastegate rattle on N54s happens off-boost. On full boost, the wastegate actuator is pulled and the gate closes = no rattle since everything is under tension. Only at partial boost/off boost does the linkage rattle.

Does N55 have wastegate rattle?

I am a N55 F32, with 65k miles. Talked to my shop.. they *think* its waste gate. Talked to Seattle BMW shop foreman.. “oh yeah.. absolutely N55s have waste gate rattle like the N54s did, EWG hasn’t changed that.”

Why does my BMW make a rattling noise when accelerating?

If you hear a rattling noise when you are accelerating then this is definitely a friction problem. This could be a simple fix such as tightening or replacing your engines various belts. You can do a simple check by dropping some water on the belts and revving the engine.

What would cause a rattling noise when you accelerate?

Worn out belt pulleys Worn out or broken belt pulleys might be the culprits if there is a constant rattling sound as you accelerate the vehicle. The pulleys will spin faster as the engine speed increases. Damaged pulleys will also cause engine noises even at idling speed!

Do wastegates make noise?

External Wastegates are responsible for turbo flutter. That fluttering sound, which typically occurs when the throttle is suddenly closed, is the sound of the turbo trying to push air into the engine but failing, so the compressor blades ‘chop’ through the air. You can read more about this phenomenon here.

Do Wastegates make a sound?

What causes wastegate chatter?

That fluttering sound, which typically occurs when the throttle is suddenly closed, is the sound of the turbo trying to push air into the engine but failing, so the compressor blades ‘chop’ through the air.

Do turbo wastegates make noise?

Why is my turbo fluttering?

That fluttering noise is the sound of a turbo operating in compressor surge, as the compressor ‘chops’ through the air rather than pushing the air into the engine. Love it or hate it, it’s doing nothing good for your turbocharger performance or reliability. This is where a blow-off valve comes into its own.