fullymatted.
Back to search
Rennlist

Cylinder crack???

Add to repair workspace
Open repair workspace
Original source
4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHCylinder crack???

Leading reported evidence

Run bore scope down the cylinders while i have it

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 thought I would run a bore scope down the cylinders while I have it on the cart and this is what I found in cyl 3 and 6.

Original post Read captured discussion
Cylinder crack???
Read full discussion summary

Leading evidence: 'Run bore scope down the cylinders while i have it' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run bore scope down the cylinders while i have it' (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.

Read captured replies

1 matching discussions · 4 captured posts examined · 0 partial discussions

Frequently discussed actions (1)

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

Run bore scope down the cylinders while i have it

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 thought I would run a bore scope down the cylinders while I have it on the cart and this is what I found in cyl 3 and 6.

Original post Read captured discussion
Cylinder crack???
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.

4 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Rennlist: 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: 20261026T183130Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hello all! Been about 18 years since my last post, but I finally have a 996 911. I just dropped the engine to freshen up things and to fix the cam deviation issue I just found out I have. I thought I would run a bore scope down the cylinders while I have it on the cart and this is what I found in cyl 3 and 6. Things looked pretty decent from the sump side, but from the spark plug holes I see what may be cracks. The Line is at about 9 o clock on #3 and #6. Please help with what you think this may be. Crossing my fingers. Thanks in advance.

POST 2Original post

You cannot have cracks in the cylinders and not have misfire too. That could be something else, like oil lines.

POST 3 / ORIGINAL POSTEROriginal post

I�m trying to figure a way to wipe that line or crack to see if it goes away. I�ll try to get better pics as well. If it�s not oil, I can�t imagine what it could be. It doesn�t go away when Turing the crank.

This is a source reference. Confirm exact model applicability in the original material.