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6
No boost and strange noise
Morning Dave I'll bear that in mind. I do the occasional long run but maybe need to do so more regularly. The car didn't smoke and according to my scan tool the DPF have been regenerating. When the turbo guy explained that the root cause was the DPF and said he could "cure" it, I asked about the risk of MOT failure. He reckons that the emissions without a DPF are way below the limit and that his particular fix is not detectable. I'm not so sure now. He said something about drilling a hole somewhere but that doesn't sound like it's undetectable to me... -
1
Aircon specialist in South East?
Hi Ken Wow lucky man 😁 As the car has been stored and Aircon systems loose a little each year anyway my first thought would be try getting it serviced (Kwik fit have summer deals) The machines used vacuum out and check for leaks if it wont hold a vacuum the machine wont try and re=gas the system. My local BMW Specialist has a mobile guy come in (£65 for my E70) Good hunting for a specialist Dave -
6
No boost and strange noise
Morning Jim Just be aware that if an MOT Garage suspect a DPF delete it's an automatic fail plus it's logged so going elsewhere wont work Better solution is just give it a good run once a month in my opinion then no risk of MOT fail Dave -
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Mobile Phone Connection
Just one. Really wierdly, it connected yesterday! Going to see what happens later when I try again and see if it works. -
6
No boost and strange noise
Thanks Dave - just noticed your post as Outlook has been filing the notification in Junk Mail. I took it to a local turbo specialist who specialize in diagnosing root cause of turbo faults/failures. They advised that the actuator that switches between the high and low pressure turbos was not holding vacuum. He said he could try replacing it but that wouldn't fix the underlying problem. He pointed out that there was oil in the intercooler pipes and recommended have both turbos refurbished. Apparently, the soot build up in the DPF caused by short trips reduces airflow in the exhaust which increases the pressure on the hot side of the turbo. The seals in the hot/low pressure side are prone to leak if the exhaust pressure increases and the leaking oil is carbonized which further damages the seals. His explanation makes sense to me and I didn't want to pay to have the actuator replaced only to have further problems in the near future. The turbos have been removed and sent for refurb and I'm expecting a bill of around £2,500 ☹️. I asked if the refurbed turbos would fail again if I keep doing short trips and he said not if I ask him to "delete" the DPF.
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