11 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHElusive squeak
Reported or suspected cause
loose plugs in cylinders 5 & 6
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
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Discussions that report identifying a cause
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Reported cause · Original poster
is exactly the same as I have been getting and it was found to be a loose plug so I checked and on my car it turned out to be loose plugs in cylinders 5 & 6.
Leading evidence: 'loose plugs in cylinders 5 & 6' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'loose plugs in cylinders 5 & 6' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check would be the exhaust system' (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.
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Suggestion
The next easiest thing to check would be the exhaust system ..
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Suggestion · Original poster
Over tightening can lead to distortion of the spark plug and breakage.
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 · Original poster
It's very important not to over or under tighten spark plugs during installation.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
loose plugs in cylinders 5 & 6
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that report identifying 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.
Reported cause · Original poster
is exactly the same as I have been getting and it was found to be a loose plug so I checked and on my car it turned out to be loose plugs in cylinders 5 & 6.
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.
11 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 1 discussions
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Has anyone any idea where this squeak is coming from, its intermittent and I removed the belt and the noise remains in any case all pulleys/bearings are OK the belt is fairly new - I found this clip which is exactly the same noise but no explanation where it is coming from.
https://www.youtube.com/watch?v=Qle3bhfNizA
If you have removed the drive belt and the noise is still there then obviously that rules out any pulleys or the belt slipping ..
Belt slipping is what the video clip sounded like to me .
The next easiest thing to check would be the exhaust system .. there is a bracket that locates the cats to the engine .. well known to crack at the clamps .. a screwdriver just to lever at these points should show if its intact or not .
If nothing on the exhaust then you left with a ramp job and the old screwdriver .
Seems to be a common problem according to US owners in the know, the noise in this video clip
https://youtu.be/YQJFrrW2Pm8
is exactly the same as I have been getting and it was found to be a loose plug so I checked and on my car it turned out to be loose plugs in cylinders 5 & 6.
Anyone else had plugs come loose?
Now you mention it I have an very early invoice in my records from OPC who diagnosed a repetitive rattle/squeak as being a loose spark plug. Never had it happen in my ownership though.
Hi mate
I pulled plugs 4-6 out today, plugs 5 and 6 were both loose, this appears to be because a garage has put too much anti seize compound on them. Took a while to patiently remove them too, thankfully just gummy compound not pulled or crossed threads as the new plugs went in lovely. Plugs 1-3 tomorrow, probably be the same story.
NGK does not recommend the application of lubricant such as copper grease to spark plug threads as the result is a reduction of frictional forces at the thread faces. ... It's very important not to over or under tighten spark plugs during installation. Over tightening can lead to distortion of the spark plug and breakage.
See
http://www.ngk-sparkplugs.jp/english/techinfo/qa/q18/index.html
