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Replaced coils and plugs still getting misfires

Help, Advice, Owners' Discussion and DIY Tutorials for the groundbreaking new Volvo S60 2011+, V60 2015+ XC60 2010-2018.
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Replaced coils and plugs still getting misfires

Post by GoLuckydog » Thu Jun 11, 2020 4:03 pm

2010 xc60 t6 got multiple misfires and replaced ignition coils and plugs ran fine for a day then theu codes again for misfires on cylinders 3 & 4. The firing order is 153624 is this correct? What else could be the issue?

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Re: Replaced coils and plugs still getting misfires

Post by RickHaleParker » Thu Jun 11, 2020 5:47 pm

Misfiring on adjacent cylinders is a symptoms of a head gasket failure between the two cylinders. Do a compression test.
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.
Platform P2 2004 S60R, B2524T4, AW50/51 AWD, B8444S TF80 AWD, Bosch Motronic 7.0, BorgWarner K24 turbocharger. V8 conversion in progress.

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