15 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHmisfire to 4,5,6 all at once
Leading reported evidence
Check ignition coils
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that performed work without a confirmed outcome
1
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
The fault codes showed three faulty coils but two were different to the first time we checked the coils.
Leading evidence: 'Check ignition coils' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check codes' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
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Performed · outcome unconfirmed
He reset the fault code and the car ran like normal again for the next few days, before developing another misfire.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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Suggestion
It's probably worth resetting the codes and as soon as the problem comes back again, check the codes to see if it is just one coil and which one.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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Suggestion
check the coil packs are not full/filling up with oil and/or water as this can cause sudden misfires also.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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Suggestion
He reset the fault code and the car ran like normal again for the next few days, before developing another misfire.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
15 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T051247Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
after a few tips if poss .
i got out of my car 996 c4 had a cup of tea etc then went out to car to have it run like a pig man light came on.
have plugged it in got error codes to say misfire on cyln 4,5,6 .
anyone got any where to start to look.
mark
I had a similar problem on my previous 996 (C4) and had a major misfire, but was miles away from my indy so had to drive a far way before he could have a look at it and find the fault codes.
By the time I got there it was showing faults on 4 of the coil packs. My indy (David Philips, Edinburgh) said that if the fault in one is not rectified soon enough, it can disrupt the signal to the others showing faults on more than one. He reset the fault code and the car ran like normal again for the next few days, before developing another misfire. We did this to see if we could narrow down the offending coil. The fault codes showed three faulty coils but two were different to the first time we checked the coils. The one coil that showed up in both checks was definitely on the way out when removed, the casing was very deteriorated.
It's probably worth resetting the codes and as soon as the problem comes back again, check the codes to see if it is just one coil and which one. I ended up changing all the coils (for the sake of 150 quid) cause if one was on the way out, the others wouldn't be far behind.
http://forums.rennlist.com/rennforu...heck-engine-light-misfires-cyl-3-and-6-a.html
You may wish to read this article carefully/indepth before starting to mess around with the vario
Simply swap a coil pack from the opposite bank into the weather proof plug on 4,5 & 6. One by one you can check if the fault clears on each cycl (4,5,6). If the known good coil pack clears each fault individually as you go along each cycl, then you have your answer.
I only read the first few posts, but that is a totally different scenario. The faults mentioned are misfires on two cylinders on opposite banks, an he mentions no rough running.
Might it not be worth the investment to take the car to a good Indy or an OPC and get them to give you a fuller diagnosis and possible explanation :?:
Big Bob :bye:
Coil packs don't care which cyl they affect and the OP does not have the error codes so spending 10 mins swapping a coil pack from a known good firing cyl to the other bank is def worth doing as it quickly rules in/out coil pack failure.
This is a source reference. Confirm exact model applicability in the original material.
