Engine popping lack of power

spudd · Mar 7th, 2020, 17:18

My xc70 D5 has had new engine mounts and new silicon pipework all round. At idle with the filler cap off it pops I have tried blanking the pipes but it carries on popping. Also notice stationary it will only rev to about 3250 rpm take the oil filler cap off it will rev right into the red. Any ideas please.

rupesh · Mar 8th, 2020, 13:51

On my v70 there is a big pipe that runs down the front of the engine behind the radiator. This had become disconnected & gave similar problems to yours. Reattaching it fixed it & the 'engine service required' light went out.

spudd · Mar 9th, 2020, 16:19

have fault code 6805 .

OWF · Mar 9th, 2020, 21:29

Thought I would ask (hope you don't mind) as its along the same lines, should there be a popping sound after engine mounts have been changed?

I have just had mine done (front and rear) and I still have a popping sound, quieter then before the mounts were done but still there when the oil filler cap is removed.

Kev0607 · Mar 11th, 2020, 23:49

@spudd - This thread might help:

https://www.volvoforums.org.uk/showthread.php?t=132443

@OWF - A slight popping sound & slight white smoke/mist when removing the engine oil cap is normal on a D5, but it shouldn't be particularly loud. Its more of a subtle popping sound, if that makes sense.

If you take the oil cap off & you need a pair of ear muffs, then there's a vacuum issue!

Mar 7th, 2020, 17:18	#1
spudd Master Member Last Online: May 28th, 2024 17:54 Join Date: Jan 2016 Location: LEICESTERSHIRE	Engine popping lack of power My xc70 D5 has had new engine mounts and new silicon pipework all round. At idle with the filler cap off it pops I have tried blanking the pipes but it carries on popping. Also notice stationary it will only rev to about 3250 rpm take the oil filler cap off it will rev right into the red. Any ideas please. __________________ XC 90 SE LUX 2014.

Mar 9th, 2020, 16:19	#3
spudd Master Member Last Online: May 28th, 2024 17:54 Join Date: Jan 2016 Location: LEICESTERSHIRE	have fault code 6805 . __________________ XC 90 SE LUX 2014.

Mar 11th, 2020, 23:49	#5
Kev0607 Premier Member Last Online: Today 00:57 Join Date: Apr 2019 Location: Manchester	@spudd - This thread might help: https://www.volvoforums.org.uk/showthread.php?t=132443 @OWF - A slight popping sound & slight white smoke/mist when removing the engine oil cap is normal on a D5, but it shouldn't be particularly loud. Its more of a subtle popping sound, if that makes sense. If you take the oil cap off & you need a pair of ear muffs, then there's a vacuum issue! __________________ 2007 S80 2.4 D5 (P3) - 110,000 miles 2008 V70 2.4 D5 (P3) - 163,000 miles Last edited by Kev0607; Mar 11th, 2020 at 23:52.

Mar 8th, 2020, 13:51	#2
rupesh New Member Last Online: Feb 6th, 2022 15:35 Join Date: Jul 2017 Location: Halstead	On my v70 there is a big pipe that runs down the front of the engine behind the radiator. This had become disconnected & gave similar problems to yours. Reattaching it fixed it & the 'engine service required' light went out.

Mar 9th, 2020, 21:29	#4
OWF Junior Member Last Online: Aug 3rd, 2023 08:50 Join Date: Mar 2017 Location: Bath	Thought I would ask (hope you don't mind) as its along the same lines, should there be a popping sound after engine mounts have been changed? I have just had mine done (front and rear) and I still have a popping sound, quieter then before the mounts were done but still there when the oil filler cap is removed.

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