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911uk

Misfire advice.

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3 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHMisfire advice.

Leading reported evidence

Replace lot if the cam cover has

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes
0
Unsuccessful attempts
1
Discussions
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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
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

It seems worthwhile replacing the lot if the cam cover has to come off.

Misfire advice.
Read full discussion summary

Leading evidence: 'Replace lot if the cam cover has' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace lot if the cam cover has' (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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1 matching discussions · 3 captured posts examined · 0 partial discussions

Compare 3 other evidence results

Replace solenoid

Suggestion or failed attempt

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 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

If I was to sort out the manifolds so that they were easy to remove do you know what the ballpark figure would be for a specialist to replace the solenoid?

Misfire advice.

Run perfectly

Suggestion or failed attempt

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 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

I assumed it was coil/solenoid related as it was running really rough at idle but fine at higher revs and flagged the code above last week; however, upon starting it yesterday it was running perfectly!

Misfire advice.

Run really rough at idle

Suggestion or failed attempt

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 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

I assumed it was coil/solenoid related as it was running really rough at idle but fine at higher revs and flagged the code above last week; however, upon starting it yesterday it was running perfectly!

Misfire advice.
Frequently discussed actions (4)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Replace lot if the cam cover has

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

It seems worthwhile replacing the lot if the cam cover has to come off.

Misfire advice.

Replace solenoid

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

If I was to sort out the manifolds so that they were easy to remove do you know what the ballpark figure would be for a specialist to replace the solenoid?

Misfire advice.

Run perfectly

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

I assumed it was coil/solenoid related as it was running really rough at idle but fine at higher revs and flagged the code above last week; however, upon starting it yesterday it was running perfectly!

Misfire advice.

Run really rough at idle

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

I assumed it was coil/solenoid related as it was running really rough at idle but fine at higher revs and flagged the code above last week; however, upon starting it yesterday it was running perfectly!

Misfire advice.
Coverage and how to read this overview

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.

3 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: 20261026T103553Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi guys, don't suppose anyone could offer any advice following my post on pistonheads? So following some poking about yesterday I think my assumption may have been incorrect so could anyone offer some thoughts. Upon inspection I'm not leaking oil through the coil but from above behind this coolant pipe. Doing some research suggests there is a vent pipe from the AOS that connects into the crankcase here. This is the variocam coil. It seems logical to me that if my crankcase pressure is wrong it could mess with the variocam operation?

POST 2Original post

It depends on what year your car is as to what's possibly wrong .. the earlier Non variocam plus and you have a seperate chain between the camshafts which the solenoid operates on to move the position of the camshafts .. Variocam plus has a solenoid which operates a unit on the end of the inlet camshaft ... very different systems . Early cars have a single cam shaft sensor .. we have one at work atm with a deviation of 21 degrees .. in other words the inlet cam is way out of position .. the car below 1500 rpm runs like a sack .. above that its fine . This is having a new vario cam fitted .. whether you do the solenoid or the entire unit is going to be close in cost .. ie you still have to get the cam cover off and that involves removing the exhaust manifold .. with the usual snapped bolts and drilling out with whichever of these you replace . So first off .. what year car do you have ?? Crankcase pressure will have no bearing on this fault code .. that will give you lambda sensor fault codes . Fault code info is below for what its worth ..

POST 3 / ORIGINAL POSTEROriginal post

Thanks deMort. It's a 98 3.4 so not variocam plus. I guess I might be putting 2 & 2 together and getting 5 as the oil leak might not actually be connected to the rough running. I assumed it was coil/solenoid related as it was running really rough at idle but fine at higher revs and flagged the code above last week; however, upon starting it yesterday it was running perfectly! I have a pair of new stainless manifolds which were delivered last week in anticipation of having the cam cover removed which I am happy to tackle myself (my brother has 30 years experience as a mechanic if I need any help). If I was to sort out the manifolds so that they were easy to remove do you know what the ballpark figure would be for a specialist to replace the solenoid? It seems worthwhile replacing the lot if the cam cover has to come off. Cheers :thumb:

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