Please help, thick black smoke

Forum for Engine, Exhaust, Drivetrain, ECU
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DaveD40
Posts: 3
Joined: Fri Sep 24, 2021 5:15 am
Qashqai Model: Mk.1 Qashqai Facelift - J10b (2010–2013)

Post by DaveD40 » Fri Sep 24, 2021 5:25 am

Please help anyone!!!
I have a Nissan Quashqai +2 1.6dci Tekna, 2012 fsh.
I’ve recently bought the car, after a week or so, it started to become hard to start, so I fitted a new battery, then it’s would take a while to start even with the new battery, then it started to smoke heavily, black smoke, coolant and oil level both ok, and never overheated. I took it into my mechanic, he advised it was the turbo, so I put a new turbo on, problem was still there, then he advised it may be faulty injectors, so I had them tested, but they were ok, my mechanic has noticed that the DPF has been takin out.
I’m scratching my head wandering what it could be???

Buffy
Posts: 347
Joined: Wed Apr 01, 2020 9:14 am
Location: Telford UK
Qashqai Model: Mk.2 Qashqai Facelift - J11b (2017–2021)

Post by Buffy » Fri Sep 24, 2021 5:34 am

How about the crank case breather
2020 Quasqai 1.3DiG-T 140 Tekna in Gunmetal Grey
2020 Qashqai 1.3DIG-T 160 Tekna in Vivid Blue
Previous : 2016 Qashqai Acenta Premium 1.2 DiG-T - Gunmetal Grey
Previous : 2016 Qashqai N-Connector 1.5 Diesel - Pearl Black
Former BMW Master Technician

DaveD40
Posts: 3
Joined: Fri Sep 24, 2021 5:15 am
Qashqai Model: Mk.1 Qashqai Facelift - J10b (2010–2013)

Post by DaveD40 » Fri Sep 24, 2021 5:47 am

I haven’t checked that yet, I’ll check it today. Do you know where it is located?
Thanks

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Gel
Posts: 3189
Joined: Thu May 22, 2014 12:02 pm
Location: Thames Valley UK
Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Post by Gel » Fri Sep 24, 2021 6:20 am

If you only recently bought shouldn't be your concern, but the sellers!
2014-19 J11A-14 1.5dci Ink Blue Tekna owner; now departed for a Mazda CX-5 GT Sport Nav, 2.0L Petrol :D

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MikeGC
Posts: 1146
Joined: Tue Feb 07, 2017 11:50 am
Location: Stockport
Qashqai Model: Mk.3 Qashqai - J12 (2021+) New Model

Post by MikeGC » Fri Sep 24, 2021 7:44 am

If you bought from a dealer - take it back
March '22 - J12 1.3DIG-T 160 CVT Tekna+ with all wheel drive - Pearl Black
July '19 - J11B 1.3DIG-T 160 DCT Tekna - Vivid Blue
March '17 - Qashqai J11A 1.5dci n-connecta - gunmetal
September '14 - Juke 1.5dci gunmetal ascenta premium (red accent packs)

DaveD40
Posts: 3
Joined: Fri Sep 24, 2021 5:15 am
Qashqai Model: Mk.1 Qashqai Facelift - J10b (2010–2013)

Post by DaveD40 » Fri Sep 24, 2021 12:26 pm

I bought it privately 😩😩

MrSweetE90
Posts: 33
Joined: Wed Sep 08, 2021 12:46 am
Qashqai Model: Mk.1 Qashqai Facelift - J10b (2010–2013)

Post by MrSweetE90 » Tue Oct 05, 2021 10:10 am

Black smoke is unburnt/partially burnt fuel. Its likely a boost leak or possibly a bad sensor like MAF, LAMBDA (02 Sensor) when the engine has started can somebody give it a little rev while you listen at the engine bay for any air noises, if a hose is split or not connected its quite loud tbh.

It's a shame the mechanic takes a wild an expensive guess and you literally threw money down for a new turbo... If it was my BMW where I have diagnostic equipment to hand (like a garage) I'd first check for codes, then I'd use live data like "expected vs actual" which shows what the ECU is requesting and what it's actually getting, Im quite shocked the mechanic seemed to just take a guess. If I suspected the turbo I would have just checked for shaft play which ironically is something I did on my BMW



If the turbo was on its way out you'd very likely feel excess movement in the compressor wheel and possibly see excess oil. In and out play is a sure sign its done and needs replacing.

While I'm personally not a fan of garages as they've tried and failed ripping me off, I'd certainly say a Nissan specialist or main dealer would be better in this situation as they'll have a much better understanding of the engine and have the proper dealership diagnostic software to probably give you a much better idea as to what's going on.

One better would be some diagnostoc equipment for yourself but from my current research it seems the bloody Nissan of all things needs some crazy high price cable to properly read live data, fault codes and code the car. On the BMW a £20 K+DCAN is nearly enough for most things bar software updates haha.
2012 Qashqai 1.6 DCI TEKNA Plus

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