AJ198T
Member Since: 24 Jul 2015
Location: Sheffield
Posts: 62
  
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| V8 noise - vacuum leak or normal intake sound? |
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Can anyone, especially if they are familiar with the under-bonnet sounds a V8 D3 should make, suggest if the sucking noise in the below video sounds normal or possibly like some sort of vacuum leak please?
https://youtu.be/6swCC0Sr_PM
Still trying to chase elusive source of a lack of power below 3000rpm. Smoke test found leaking EGR and PCV, both changed but to no avail. You may notice the throttle seems a bit 'laggy' too but I might be overthinking that.
Cheers, AJ
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 7th Dec 2020 12:23 am |
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MintyHit
Member Since: 25 Jul 2017
Location: Bradford on Avon
Posts: 227
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Definitely not normal.
You have a leak or a crack somewhere... you can hear the intake whistle.
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| 7th Dec 2020 12:49 pm |
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AJ198T
Member Since: 24 Jul 2015
Location: Sheffield
Posts: 62
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Cheers MintyHit, kind of a relief to hear that ha.
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| 7th Dec 2020 5:48 pm |
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JackNorris
Member Since: 06 Jul 2012
Location: Beds/Bucks Border
Posts: 1877
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How you getting on? MY2023 Discovery 5 R-Dynamic 3.0
MY2020 Discovery 5 Landmark 3.0 - SOLD
MY2005 Discovery 3 V8 4.4 HSE - SOLD
MY2019 Discovery 5 SE 3.0 - LR Replaced !
MY2005 Discovery 3 S 2.7 - SOLD
MY2016 Discovery 4 Graphite - SOLD
MY2015 Discovery 4 SE Tech - SOLD
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| 2nd Jan 2021 10:19 pm |
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AJ198T
Member Since: 24 Jul 2015
Location: Sheffield
Posts: 62
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Seems to be coming from somewhere around the rear of the engine so annoyingly not very accessible for me to investigate further. One potential suspect is the plate and gasket on the rear of the manifold (circled in attached pic). It's booked in with mechanic but couldn't get in until the 29th Jan so got a few weeks to wait until I know more.
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| 6th Jan 2021 1:53 pm |
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