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Runs rough · Misfire / Rough IdleOwner reports · not verified
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Misfire / Rough Idle

Owner reports of misfires and rough running from one forum thread

Posts from five owners in one forum thread report misfires, two of them as relayed by a dealer. Spark plug replacement, injector and coil work, and an HPFP replacement each appear in different owners' posts, but the posts don't establish a common cause, and the reported outcomes are short-term or undated.

Summary written for this page from the reviewed forum posts

Evidence
Owner reports
Posts used
5 · not separate cars
Verification
Not independently verified
Reported observations5 items · owner reports

What owners said they saw

A misfire reported by a dealer is labelled as such. Each line is a short summary of the owner's report. Open “Quoted text” for their exact words.

Post 7319284misfireramorendez · 2010-05-14 13:59No quotation is linked to this item in the reviewed record; see the source post.Source post · e90post.com
Post 7319284car stalled out and died twice on my way to dealership on Wednesdayramorendez · 2010-05-14 13:59No quotation is linked to this item in the reviewed record; see the source post.Source post · e90post.com
Post 12977736misfires (mentioned only as solved; not described)Eric335 · 2012-11-11 15:58No quotation is linked to this item in the reviewed record; see the source post.Source post · e90post.com
Post 18075802dealer reported slight misfire on all 6 cylinderstrevor557 · 2015-06-11 21:55No quotation is linked to this item in the reviewed record; see the source post.Source post · e90post.com
Post 18322206misfiressan40k · 2015-07-26 22:48No quotation is linked to this item in the reviewed record; see the source post.Source post · e90post.com
Reported testsNot reported

Tests owners reported

Not reported in any reviewed post on this page.

Reported work7 items · owner reports

Work owners said they did

Post 7319284all 6 fuel injectors replacedramorendez · 2010-05-14 13:59
Quoted text (1)

All 6 fuel injectors and decoupling elements were replaced, plus the spark plugs and ignition coils on cylinders #4, 5 and 6.

Excerpt from post 7319284. Quoted as support for this item only.

Source post · e90post.com
Post 7319284decoupling elements replacedramorendez · 2010-05-14 13:59
Quoted text (1)

All 6 fuel injectors and decoupling elements were replaced, plus the spark plugs and ignition coils on cylinders #4, 5 and 6.

Excerpt from post 7319284. Quoted as support for this item only.

Source post · e90post.com
Post 7319284spark plugs replaced on cylinders #4, 5 and 6ramorendez · 2010-05-14 13:59
Quoted text (1)

All 6 fuel injectors and decoupling elements were replaced, plus the spark plugs and ignition coils on cylinders #4, 5 and 6.

Excerpt from post 7319284. Quoted as support for this item only.

Source post · e90post.com
Post 7319284ignition coils replaced on cylinders #4, 5 and 6ramorendez · 2010-05-14 13:59
Quoted text (1)

All 6 fuel injectors and decoupling elements were replaced, plus the spark plugs and ignition coils on cylinders #4, 5 and 6.

Excerpt from post 7319284. Quoted as support for this item only.

Source post · e90post.com
Post 12977736all 6 plugs replacedEric335 · 2012-11-11 15:58
Quoted text (1)

Replaced all 6 plugs, all misfires solved

Excerpt from post 12977736. Quoted as support for this item only.

Source post · e90post.com
Post 18266891HPFP replacedLickalot · 2015-07-16 14:23
Quoted text (1)

after replacing the HPFP, they test drove the car and the engine light came on

Excerpt from post 18266891. Quoted as support for this item only.

Source post · e90post.com
Post 18322206spark plugs replaced by authorsan40k · 2015-07-26 22:48
Quoted text (1)

i went ahead and replaced plugs myself and the issue was gone.

Excerpt from post 18322206. Quoted as support for this item only.

Source post · e90post.com
Reported diagnosis1 item · owner reports

Diagnoses as owners reported them

As reported in the post; it doesn't say who made the diagnosis, and it wasn't independently confirmed.

Post 7319284internal failure of fuel injectorsramorendez · 2010-05-14 13:59
Quoted text (1)

Turns out it was a misfire and "internal failure of fuel injectors".

Excerpt from post 7319284. Quoted as support for this item only.

Source post · e90post.com
Reported outcomes4 items · owner reports

What owners said happened afterwards

Outcomes are what each owner reported at the time. None describes a long-term result.

Post 7319284Started up this morning and it was normal for the most part - after the initial idle at 1.1k rpm, it jumped up to 1.3k for a second before settling down to 550. No shuddering or sputtering (that I can tell immediately, at least), so I guess it's sorta back to normal.ramorendez · 2010-05-14 13:59It refers to work in this same post (listed above).
Quoted text (1)

Started up this morning and it was normal for the most part - after the initial idle at 1.1k rpm, it jumped up to 1.3k for a second before settling down to 550. No shuddering or sputtering (that I can tell immediately, at least), so I guess it's sorta back to normal.

Excerpt from post 7319284. Quoted as support for this item only.

Source post · e90post.com
Post 12977736all misfires solvedEric335 · 2012-11-11 15:58The owner describes this as a good result for the period they describe. It doesn't show a lasting fix. It refers to work in this same post (listed above).
Quoted text (1)

Replaced all 6 plugs, all misfires solved

Excerpt from post 12977736. Quoted as support for this item only.

Source post · e90post.com
Post 18266891After the HPFP replacement, the dealer reported the engine light on a test drive and multiple cylinders misfiringLickalot · 2015-07-16 14:23It refers to work in this same post (listed above).
Quoted text (2)

after replacing the HPFP, they test drove the car and the engine light came on

there was multiple cylinders misfiring

Excerpt from post 18266891. Quoted as support for this item only.

Source post · e90post.com
Post 18322206misfires resolved after spark plug replacementsan40k · 2015-07-26 22:48The owner describes this as a good result for the period they describe. It doesn't show a lasting fix. It refers to work in this same post (listed above).
Quoted text (1)

i went ahead and replaced plugs myself and the issue was gone.

Excerpt from post 18322206. Quoted as support for this item only.

Source post · e90post.com
What these posts don't tell youGaps
Diagnostic testsNot reported. None of these posts describes a test result, such as swapping a coil to see whether the misfire follows it.
Common causeNot established. Different owners report different work, and the posts don't compare causes.
CauseOnly as reported by owners; see the reported diagnosis above. Not independently confirmed.
Result of the workOnly where the same post says so; see each outcome's note.
Lasting fixNot reported. No reviewed claim on this page describes long-term results.
ConnectionsNot reported. Where one post reports more than one kind of item, they're listed under that post, but the records don't say one explains another.
How commonCan't be answered from these posts. They're a handful of forum reports, not a sample of cars, and posts aren't separate vehicles or repair cases.
Repair stepsNot on this page. It isn't repair guidance: no procedure, parts list or torque values.
Vehicle detailsNot used on this page. Engine and model year aren't shown.