Noise at 1350rpm

[Kallaskalle]

New video i recorded today, the gas pedal is fixed to around 1300rpm with a stick.
The engine is doing the pumping.

Very clear it’s from the intake side, the sound is very much noticeable from the air filter box.

I notice a burnt rubber/plastic smell from the exhaust when the issue is present (almost every time I drive now)

The start/stopp function doesn’t work any more, no problem for me but someone asked about this earlier in the thread.

 

[Phill09]

New video i recorded today, the gas pedal is fixed to around 1300rpm with a stick.
The engine is doing the pumping.

Very clear it’s from the intake side, the sound is very much noticeable from the air filter box.

I notice a burnt rubber/plastic smell from the exhaust when the issue is present (almost every time I drive now)

The start/stopp function doesn’t work any more, no problem for me but someone asked about this earlier in the thread.

Did you manage to find anything? My T6 140bhp is doing the same now ¯\_(ツ)_/¯

 

[Kallaskalle]

Nope! The noise is still present and the car is still running without any breakdown. Bad mileage when noise is present, restart engine and it’s gone, and mileage returns to normal.

almost every time I drive ≈10km the noise appears.

 

[Kallaskalle]

It’s Very cold where i live now, and the engine have a hard time getting warm. I get no noise as long as the engine is cold, by cold I mean under regular working temperature (80-90 C/170-195 F). Just adding a clue to the mystery

 

[temporarysecretary]

Sounds like tensioner belt related to my ears. I'd pop the cover off the belts on the side of the engine and see if the tensioner is releasing tension when the noise happens.

If that is inconclusive I'd pop the air intake off the air box for a moment and see if you hear the sound coming out of the air intake more than you do the engine bay. Just be careful to not get anything in it. You will know straight away as it will be a fair amount louder.

 

[kirkm5238]

Hello guys anyone get to bottom of this noise my t6 140 dose the same thanks

 

[Kallaskalle]

Nope the sound is still present on mine and almost every time I drive.

Noticed that the car been drinking about 1L oil since the change last year (around 2000km/1200miles). Had to top it up last week. The exhaust smells weird/burned when the issue is around. Bad mileage, feels little weak and slow. And some times I drive it’s feels perfect, good mileage, spins like a cat in the engine.

 

[The Bear78]

Hello guys anyone get to bottom of this noise my t6 140 dose the same thanks

Mine did it when I bought it 5 years and 50000 miles ago. Mines a 140 too.
'Still does it now...
It's only on a light throttle, never under load and not all the time.
Since buying the van I've had the belts and pulleys changed and replaced the egr assembly (for other reasons) but neither made any difference to this noise.