fullymatted.
Back to search
Rennlist

Engine trouble

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

Discussion summary

YOUR RESEARCHEngine trouble

Leading reported evidence

Check compression

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

Doubt they checked compression on all cyls.

Original post Read captured discussion
Engine trouble
Read full discussion summary

Leading evidence: 'Check compression' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check compression' (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 · 6 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.

Check compression

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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

Doubt they checked compression on all cyls.

Original post Read captured discussion
Engine trouble
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.

6 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: 20261027T005001Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I'm looking for some help, I have a 1999, 996 with 50,800 miles. While I may drive it fast at times I am not hard the car, The other day while driving (45 mph in traffic) to work, the engine just quit (no power) I coasted to the side of the road and attempted to start the car. It would turn over but not start. I had it towed to a garage (specializes in Porsche) and was told that there was major internal damage (no compression). It was explained to me, that though rare, the cause of the failure may have been a bolt(s) backing out internal to the engine into the gears. Has this happened to anyone? Was there a recall on this issue? This just doesn't seem right.

POST 2Original post

That explanation sounds very weird.. you should get a second opinion..

POST 3Original post

Timing chain or intermediate shaft? Doubt they checked compression on all cyls. Probably just picked one that had valve(s) open.

POST 4Original post

I'm confused about the explanation. We need some more information. Sounds like Timing chain to me though, since if there is no compression, that must mean the crank isn't moving at all.

POST 5Original post

Search this forum for "intermediate shaft failure".

POST 6Original post

If the valves are bent, there wont be any comporessoon either. 99s arent known for ims failures

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