17 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHMissfire missery
Leading reported evidence
Replace coil pack as there was some signs of perishing
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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 performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
So off to Parr this time ,yes cylinder 6 so they replaced the coil pack as there was some signs of perishing on two coils.
Leading evidence: 'Replace coil pack as there was some signs of perishing' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'coil packs (so replaced most of those)' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Replace coil pack as there was some signs of perishing' (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.
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 performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
They first thought it was the tappets (so replaced all of them) then they thought it was the coil packs (so replaced most of those), then they were certain it was a faulty injector, which was the final remedy which worked.
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 performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
They first thought it was the tappets (so replaced all of them) then they thought it was the coil packs (so replaced most of those), then they were certain it was a faulty injector, which was the final remedy which worked.
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 suspect a cause
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suspected cause
They first thought it was the tappets (so replaced all of them) then they thought it was the coil packs (so replaced most of those), then they were certain it was a faulty injector, which was the final remedy which worked.
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 suspect a cause
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suspected cause
They first thought it was the tappets (so replaced all of them) then they thought it was the coil packs (so replaced most of those), then they were certain it was a faulty injector, which was the final remedy which worked.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
They first thought it was the tappets (so replaced all of them) then they thought it was the coil packs (so replaced most of those), then they were certain it was a faulty injector, which was the final remedy which worked.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
They first thought it was the tappets (so replaced all of them) then they thought it was the coil packs (so replaced most of those), then they were certain it was a faulty injector, which was the final remedy which worked.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Unsuccessful attempt · Original poster
Back it went and the replaced some spark plugs but it didn't fix it .Played around with a bunch of terminal -no that didn't work and yes it was Cylinder 6. Cleared the computer down played with the chip ecu settings -no joy so fiddled some more and it worked but they don't have a clue why or how.
Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.
Reset computer .it was showing a multiple missfire
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
Off to OPC who fiddled around for a couple of hours and said it was fine and reset the computer .It was showing a multiple missfire but other error codes for cylinder 6.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
coil packs (so replaced most of those)
No successful repair reported for this finding.
0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect a cause
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suspected cause
They first thought it was the tappets (so replaced all of them) then they thought it was the coil packs (so replaced most of those), then they were certain it was a faulty injector, which was the final remedy which worked.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suspected cause
They first thought it was the tappets (so replaced all of them) then they thought it was the coil packs (so replaced most of those), then they were certain it was a faulty injector, which was the final remedy which worked.
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.
17 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Porsche Club GB: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 1 adjusted by outcome qualification.
1 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
Thanks Rodney and Richard, any ideas are helpful as it is getting boring and costly to keep going back with a fault they can't find and don't know how they fixed it!!
[&o]Hello all, here is a puzzle. My 3.6 C2 has had a recuring problem. A missfire on the same cylinder after a good roasting . This first occured about 8 months ago after a good hard run( clear of the clogged south east traffic!)The car was fine until I stopped at the traffic lights and it went all lumpy and the engine light flashed. Off to OPC who fiddled around for a couple of hours and said it was fine and reset the computer .It was showing a multiple missfire but other error codes for cylinder 6. So 2000 miles went by and no problem. Then after another spirited run same again when stopping for the lights . So off to Parr this time ,yes cylinder 6 so they replaced the coil pack as there was some signs of perishing on two coils. Another 2000 ish and the same again. Back it went and the replaced some spark plugs but it didn't fix it .Played around with a bunch of terminal -no that didn't work and yes it was Cylinder 6. Cleared the computer down played with the chip ecu settings -no joy so fiddled some more and it worked but they don't have a clue why or how. Another 1000 miles and after a short burst ,same again and I think it may just be CYLINDER BL***** 6. Help please They are all bemused and I don' like the sound of a flat 5
A faulty coil pack or spark plug would be the obvious choice, but you have eliminated those possibilities. The only thing I can suggest is checking the wiring between the coil pack and the ECU, and the earth wire to the coil pack. If there aren't any problems with the wiring, then maybe there is a fault with the ECU itself.
A faulty injector may be the cause.
My CEL light came on a while back and the engine became slightly lumpy. My OPC diagnosed this as a faulty injector, replaced it, and the problem has now gone.
Thanks Rodney and Richard, any ideas are helpful as it is getting boring and costly to keep going back with a fault they can't find and don't know how they fixed it!! [8|] Has any one else come across this problem? A mechanic friend has suggested the idea of a piece of muck getting into the tappet bucket but I can't quite see how that may be . Any more thoughts ?
Had a similar problem with mine, and did the usual (coil pack, spark plugs).
Light came on whilst I was in an OPC having a battery swap out. Very nice guy there diagnosed it as an O2 sensor, and plan to do this when it's next booked in.
You're probably right Richard, but as you know in my case it wasn't that simple. They first thought it was the tappets (so replaced all of them) then they thought it was the coil packs (so replaced most of those), then they were certain it was a faulty injector, which was the final remedy which worked.
I sometimes wonder about the effectiveness of these diagnostic systems. In 3 times that they have been called on to source problems in my cars, they have always failed to do so correctly, and it usually ends up being a costly process of trial and error.[:-]
Agree totally, so if you don't have an OPC warrantee (which I assume you don't) then why not take it to a specialist who knows their stuff about engines, such as Baz Hartech ?
Parr are one of the most respected independents in the country, and they really should know their stuff. I'm a bit surprised they are scratching their heads.
Many thanks again for all these thoughts guys .Parr went into the system and did a full diagnostic. I haven't got the error codes but they said there was one for a multiple missfire but it always comes back to No 6 cyl.The injector is a good point but the Co2 ( if that what you mean't Derek) sensor is another good idea, does it have one for each cylinder?
It does give us something to aim at !!
Just to be clear: I wasn't commenting on Parr specifically as I have no experience of my own with them. The comment was more related to diagnostic systems.
Sorry Sanjib I didn't word my post very well. I wasn't criticising your comment and I agree with you that it all depends on how the diagnostic results are interpreted, which needs someone with a lot of experience. I think Diesel had missed the fact that Tony had taken it to an indy.
