Air sound on light acceleration

Forum for Engine, Exhaust, Drivetrain, ECU
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sb3284
Posts: 4
Joined: Thu Aug 02, 2018 12:34 pm
Qashqai Model: Mk.2 Qashqai Facelift - J11b (2017–2021)

Post by sb3284 »

Hi!

I'm a relatively new QQ owner. It's a 2018's 1.2 Dig-T 115 which I purchased this spring.

From the beginning it's been making a weird air/vent almost whistling noise on light acceleration, approximately between 1500-2250 rpm. It's hard to tell whether it goes away on higher RPM:s or if it's just drowned by engine/road-noise but it definitely goes away if I give more gas. It also goes away, with a tiny delay, whenever I release the gas pedal.

Googling and reading the service manual ( :D ) has not provided any good answers to what the sound might be. My guesses include various turborelated vacuum- och boost-leaks (definitive faults, not likely on brand new car?) and other turbo-related sounds like the wastegate, blow-off valve or simply the turbo spooling up. But none of my guesses really fit! Why on light acceleration only? Anything turbo-related (or leaks for that matter) should increase with more gas, right?

Is there any Qashqai-owners here on the forum who recognize this sound?

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gloucester
Posts: 5173
Joined: Sun Apr 03, 2016 7:04 am
Location: Gloucestershire, England
Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Post by gloucester »

I had a 1.2 and it didn't do it. However my previous car, a Fabia vRS had what sounds a very similar noise. When I queried the dealer he said "they all do that - nothing to worry about". When I said my previous Fabia vRS didn't do it he said "some are worse than others". It didn't change is about 30,000 miles
(2015 Nissan Qashqai Tekna DIG-T 1.2 sold 15/6/18) ~ 2018 Suzuki Ignis SZ5 - 2018 Yamaha MT-07 ~ (2024 Volvo EX30 ordered)
sb3284
Posts: 4
Joined: Thu Aug 02, 2018 12:34 pm
Qashqai Model: Mk.2 Qashqai Facelift - J11b (2017–2021)

Post by sb3284 »

Thanks for your input!

I'm going to bring it up when it's time for the first service, but since there's no real problem with it I suspect I'll get a similar answer as you got with your Fabia vRS!
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gloucester
Posts: 5173
Joined: Sun Apr 03, 2016 7:04 am
Location: Gloucestershire, England
Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Post by gloucester »

Certainly worth checking - it worried me at first but I got used to it
(2015 Nissan Qashqai Tekna DIG-T 1.2 sold 15/6/18) ~ 2018 Suzuki Ignis SZ5 - 2018 Yamaha MT-07 ~ (2024 Volvo EX30 ordered)
chrisw99
Posts: 540
Joined: Mon Jul 11, 2016 10:42 am

Post by chrisw99 »

I just had my 1.2 engine replaced with a brand new one. The new one is SO much quieter, the only noise I can now hear is similar to what you describe. I had a listen when parked up and lightly accelerating , with my door and bonnet open, and I've come to the conclusion it's just the standard engine noise , but filtered through all the firewall and dashboard makes it sound like that.
Oct 2014 N-tec+, 1.2 dig-T
paplane
Posts: 76
Joined: Thu Apr 16, 2015 9:24 pm

Post by paplane »

I've owned a 2014 1.2 and now have a 2018 1.2.

It's noticeable that the new car makes much more of a whooping noise than the earlier car so it seems the noises can vary. The new car is a brand new though with no miles on the clock (the last one had 12k miles when I got it) - don't know if that's a factor.
chrisw99
Posts: 540
Joined: Mon Jul 11, 2016 10:42 am

Post by chrisw99 »

I wonder if the engines are compatible, i.e having just had my engine replaced will I now have the same engine as a 2018 1.2, or would they have had to source a compatible 2014 engine?
Oct 2014 N-tec+, 1.2 dig-T
m112
Posts: 36
Joined: Sat Sep 16, 2017 12:23 pm
Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Post by m112 »

sb3284 wrote: Thu Aug 02, 2018 4:26 pm Hi!

I'm a relatively new QQ owner. It's a 2018's 1.2 Dig-T 115 which I purchased this spring.

From the beginning it's been making a weird air/vent almost whistling noise on light acceleration, approximately between 1500-2250 rpm. It's hard to tell whether it goes away on higher RPM:s or if it's just drowned by engine/road-noise but it definitely goes away if I give more gas. It also goes away, with a tiny delay, whenever I release the gas pedal.

Is there any Qashqai-owners here on the forum who recognize this sound?
I have the same noise when accerleting, Ive got 1.2 from 2015.
Please let me know if you found anything from Nissan.
Michel81
Posts: 57
Joined: Sun Jun 17, 2018 5:49 am
Location: Kymenlaakso, Finland
Qashqai Model: Mk.2 Qashqai Facelift - J11b (2017–2021)

Post by Michel81 »

As far as I know it is the turbo. Slight wistling noise and when you let go the accelerator you hear a woosh (blow of valve).
2015/2017 J10 Qashqai Connecta 360 black 1.2
03-2017/08-2018 J11 Qashqai Connecta Gun metal grey, designpack 10 year anniversary model. 1.2
08-2018 J11b Qashqai Tekna, design pack, led head lights, chestnut bronze, 1.2 Xtronic
Finland based
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