Home > Technical (L322) > 4.2 supercharged misfire on idle |
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friskydog Member Since: 16 May 2018 Location: West Midlands Posts: 70 |
So mechanic checked the cats and sees nothing wrong with them apparently.
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10th Sep 2021 10:30pm |
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dingg1 Member Since: 29 Jun 2013 Location: PORTUGAL Posts: 1340 |
Banks are 1357
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11th Sep 2021 7:03am |
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Danwilderspin Member Since: 15 Jun 2016 Location: Cambridgeshire Posts: 2215 |
Dingg is correct the mechanic is quoting the BMW order.
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11th Sep 2021 9:28pm |
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friskydog Member Since: 16 May 2018 Location: West Midlands Posts: 70 |
Thanks Gents for confirming the cylinder pattern. I can't thrash engine atm after engine rebuild for a bit. Apparently. Range Rover Vogue SE 2007 L322 4.2 Supercharged 121k. Engine rebuilt @ 120666 Miles |
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12th Sep 2021 3:34pm |
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JavaBlack Member Since: 07 Sep 2016 Location: UK Posts: 67 |
Have you checked the fuel pressure?
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4th Mar 2022 4:23pm |
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friskydog Member Since: 16 May 2018 Location: West Midlands Posts: 70 |
So misfires only on 1357 on one bank now after sorting air leaks on engine. However I have had it confirmed the valve clearance is further out of tolerance after engine rebuild. So also have had trouble when starting in colder weather which also relates to valve clearance issues again apparently.
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4th Mar 2022 4:27pm |
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Danwilderspin Member Since: 15 Jun 2016 Location: Cambridgeshire Posts: 2215 |
Have you been in contact with the place that rebuilt it?
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5th Mar 2022 10:37am |
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friskydog Member Since: 16 May 2018 Location: West Midlands Posts: 70 |
Yes but they won't offer a resolution to valve clearances.
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5th Mar 2022 10:42am |
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Danwilderspin Member Since: 15 Jun 2016 Location: Cambridgeshire Posts: 2215 |
If you hired them to do a specific job and it’s still not done surely you have a case for the small
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5th Mar 2022 10:52am |
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friskydog Member Since: 16 May 2018 Location: West Midlands Posts: 70 |
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6th Mar 2022 8:51pm |
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friskydog Member Since: 16 May 2018 Location: West Midlands Posts: 70 |
Could these misfires be caused by valve clearances being way out of tolerance? Range Rover Vogue SE 2007 L322 4.2 Supercharged 121k. Engine rebuilt @ 120666 Miles |
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6th Mar 2022 8:53pm |
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dhallworth Member Since: 10 Oct 2011 Location: Glasgow Posts: 3066 |
Have you checked compression?
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6th Mar 2022 9:21pm |
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friskydog Member Since: 16 May 2018 Location: West Midlands Posts: 70 |
The rebuilders said compression was fine after the rebuild as it's one of the tests they check after. However after requesting said data they seem to have misplaced the testing data somehow.
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6th Mar 2022 9:27pm |
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dhallworth Member Since: 10 Oct 2011 Location: Glasgow Posts: 3066 |
If the valve clearances aren’t set properly then I’d hazard a guess at compression not being right either
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6th Mar 2022 9:30pm |
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