RE: Mazda 5 Turbo failure (DPF warning light)

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RE: Mazda 5 Turbo failure (DPF warning light)

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RE: Mazda 5 Turbo failure (DPF warning light) - 7/7/2008 3:00:40 PM

AIMWO4

Posts: 56
Joined: 2/26/2007
Status: offline

Sounds like a clogged oil sump (carbon deposits) which starves oil from the turbo... which fails.

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AIM WO4
Sport, 5-Speed, K&N CAI, 225-45/17 Yoko 520

(in reply to NickC)

Post #: 11

RE: Mazda 5 Turbo failure (DPF warning light) - 7/7/2008 10:32:21 PM

NickC

Posts: 57
Joined: 5/22/2008
Status: offline

It could be. Although I do hope they did check the oil supply before fitting a new turbo. Turbos fail for a reason so it''s vital to check oil supply and cooling, if fitted. You must also replace the oil and filter to ensure a clean oil supply.

(in reply to AIMWO4)

Post #: 12

RE: Mazda 5 Turbo failure (DPF warning light) - 7/9/2008 5:06:26 AM

interbear

Posts: 5
Joined: 7/3/2008
Status: offline

quote:

ORIGINAL: AIMWO4

Sounds like a clogged oil sump (carbon deposits) which starves oil from the turbo... which fails.

You could well be right. I spoke to the dealer today, the Mazda tech dept have advised them to "strip down the sump" to look for exactly that. The car was towed into them a week ago and only now have they decided what to do......but they can''t tell me when they''ll actually do it as their workshop is booked up.

Is this standard from a Mazda service perspective, I was under the impression that Mazda had a good reputation for both reliability and customer service levels?

(in reply to AIMWO4)

Post #: 13

RE: Mazda 5 Turbo failure (DPF warning light) - 9/10/2008 2:03:56 AM

Mazdarookie

Posts: 6
Joined: 7/24/2007
From: Plymouth, Devon, UK
Status: offline

Hi,

I have owned a Mazda 5 Diesel sport from new. My engine failed at 25000 miles in July 07. There was a loud knocking noise. The whole engine was replaced ... without a clear explanation of the defect.
Last week @ 39000 miles my engine failed while driving @ 70 MpH.... smoke outside and inside the car... Engine severely damaged... I was informed that it a problem with the turbo. They are stripping the engine down and taking photographs to identify the problem. Mazda is looking at the problem now..

The tech told me that there was NO oil in the engine. At the place where this happened there was a lage oil slick ( actually more of a pool). The last time I checked oil was 8 days before the event.

My question is whether these failures could be a problem with something outside the engine? Should I be asking more questions?

Thanks for any input.

(in reply to interbear)

Post #: 14

RE: Mazda 5 Turbo failure (DPF warning light) - 9/10/2008 10:57:37 AM

NickC

Posts: 57
Joined: 5/22/2008
Status: offline

It really depends on what has caused the fault. If, for instance, you picked up a stone in the oil cooler which puntured the cooler you''d have lots of oil and smoke before the engine ran out of oil and went bang. There''d be lots of oil everywhere and certainly a pool of oil under the car when you stopped. Another possibility is the bearings or seals have failed in the turbo causing engine oil to be pumped into the inlet, which the engine will quite happily run on, until the oil runs out and the engine goes bang. Again a pool of oil and lots of smoke.
Sump plug may have come out. Oil filter may have come undone. Another oil pipe may have failed. Head gasket. There''s a loads more things which could cause the fault.
Did the oil pressure light come on before the failure? Was the engine running OK right up to the failure? Any coolant loss?
Generally turbos fail due to oil starvation, so you need to find out why.

(in reply to Mazdarookie)

Post #: 15

RE: Mazda 5 Turbo failure (DPF warning light) - 9/10/2008 10:57:15 PM

Mazdarookie

Posts: 6
Joined: 7/24/2007
From: Plymouth, Devon, UK
Status: offline

Thank you

Engine was running fine upto that point. There was no warning lights before the failure. Most of the lights were lit when the car stopped!. They will probably let me know today about the repair plans.

Regards

(in reply to NickC)

Post #: 16