Home > Technical (L322) > 4.2 supercharged misfire on idle |
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dingg1 Member Since: 29 Jun 2013 Location: PORTUGAL Posts: 1339 |
How many times have you ran the car in that 200 miles? Cel code only pops up after 3 runs with a pending code iirc |
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4th Sep 2021 8:31pm |
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friskydog Member Since: 16 May 2018 Location: West Midlands Posts: 70 |
I didn't know that. So...
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4th Sep 2021 11:02pm |
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Bean19844 Member Since: 25 Oct 2020 Location: Essex Posts: 929 |
A certain member on here had very similar problems going by your input. I'd start with the following mate and see where that leads you as it sounds like a fuelling problem.
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4th Sep 2021 11:19pm |
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friskydog Member Since: 16 May 2018 Location: West Midlands Posts: 70 |
Hi Bean, thanks for the message the spark plugs have been changed with the engine rebuild.
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5th Sep 2021 7:48am |
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Danwilderspin Member Since: 15 Jun 2016 Location: Cambridgeshire Posts: 2214 |
Was it me? Have you tried swapping coils over to see if the problem moves bank to bank? Current stable: 2006 BMW M6 2007 4.2 V8 S/C FF Gone: 2002 4.4 V8 FF |
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5th Sep 2021 10:02pm |
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friskydog Member Since: 16 May 2018 Location: West Midlands Posts: 70 |
I now am not seeing any Misfire alerts. However I have just thrown a P0174 system lean on bank 2 arrggghhhh.
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6th Sep 2021 6:37pm |
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Haylands Member Since: 04 Mar 2014 Location: East Yorkshire Posts: 8160 |
With no misfire codes it's unlikely to be coil packs, fuel rail and injectors are more likely... Pete
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6th Sep 2021 8:17pm |
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friskydog Member Since: 16 May 2018 Location: West Midlands Posts: 70 |
Thanks again Haylands first thing we will check in that case. Range Rover Vogue SE 2007 L322 4.2 Supercharged 121k. Engine rebuilt @ 120666 Miles |
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6th Sep 2021 8:51pm |
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dingg1 Member Since: 29 Jun 2013 Location: PORTUGAL Posts: 1339 |
4 injectors don't go bad at the same time all on one bank |
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6th Sep 2021 8:55pm |
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friskydog Member Since: 16 May 2018 Location: West Midlands Posts: 70 |
Hey Dingg,
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6th Sep 2021 9:16pm |
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Haylands Member Since: 04 Mar 2014 Location: East Yorkshire Posts: 8160 |
It's not 4, one is enough to make the symptoms the OP has... the fuel rails give problems as well..!! Don't know how they deteriorate but it's a commonish issue... Pete __________________________________________________ 2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior 2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold 2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold 2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold -Click for Project Fatty off roader- |
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6th Sep 2021 9:26pm |
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Danwilderspin Member Since: 15 Jun 2016 Location: Cambridgeshire Posts: 2214 |
In mine you could watch the cylinder misfire counters going up on my scanner but not enough for it to throw a fault. New coils fixed it and did new plugs after too. Current stable: 2006 BMW M6 2007 4.2 V8 S/C FF Gone: 2002 4.4 V8 FF |
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6th Sep 2021 10:59pm |
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friskydog Member Since: 16 May 2018 Location: West Midlands Posts: 70 |
Thanks for that nugget of info Dan I will be checking them tomorrow with mechanic for sure. Range Rover Vogue SE 2007 L322 4.2 Supercharged 121k. Engine rebuilt @ 120666 Miles |
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7th Sep 2021 6:39am |
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maric995 Member Since: 04 Apr 2019 Location: zagreb Posts: 58 |
Strong concetration of bg44k fuel cleaner will help you, it did solved constant missfire codes on my 4.4 ajv8 RR HSE 4.4 2006 LPG |
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7th Sep 2021 7:09am |
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