Rennlist

Diagnose Engine

Add to repair workspace

New repair projectOpen repair workspace

Original source

7 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHDiagnose Engine

Leading reported evidence

Test also

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
You can do a leak-down test, or hook up battery power direct to the starter with flywheel installed and do a compression test also.
Original post Read captured discussion
Diagnose Engine

Read full discussion summary

Leading evidence: 'Test also' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Test also' (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 · 7 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Use motor

Suggestion or failed attempt

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
What's the history on this new used motor?
Original post Read captured discussion
Diagnose Engine

Use some racing series

Suggestion or failed attempt

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
Hopefully I am going to get more info soon (it has been refurbished some years ago but I don't know what year yet), but the engine has been used for some racing series for a couple of years.
Original post Read captured discussion
Diagnose Engine

Frequently discussed actions (3)

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

Test also

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
You can do a leak-down test, or hook up battery power direct to the starter with flywheel installed and do a compression test also.
Original post Read captured discussion
Diagnose Engine

Use motor

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
What's the history on this new used motor?
Original post Read captured discussion
Diagnose Engine

Use some racing series

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
Hopefully I am going to get more info soon (it has been refurbished some years ago but I don't know what year yet), but the engine has been used for some racing series for a couple of years.
Original post Read captured discussion
Diagnose Engine

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.

7 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: 20261027T025149Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I have bought a new engine (a used engine) for my 996 C2 2002 since my old engine has crashed and is not possible to rebuild (one connecting rod pinched the crankshaft). I have the engine outside my car and I want to check if the engine is OK before I install it in my car. Is it possible to check if the engine is OK without installing the engine or tear it down? I am thinking compression test and oil analysis. Is that enough? Robert

POST 2Original post

It�s going to be tough without running it. Sure you can do an oil analysis, but unless it came with the original oil in it (don�t they usually ship engines empty of fluids?) it�s not going to tell you much. I suppose you can do compression by hand cranking. Only crank clockwise...

POST 3Original post

You can do a leak-down test, or hook up battery power direct to the starter with flywheel installed and do a compression test also.

POST 4Original post

What's the history on this new used motor?

POST 5Original post

Do a leak test,

POST 6 / ORIGINAL POSTEROriginal post

Quotes source post: 15542923

Hopefully I am going to get more info soon (it has been refurbished some years ago but I don't know what year yet), but the engine has been used for some racing series for a couple of years. Robert

POST 7Original post

I would say take the plugs out and bore scope it , probably best , I've heard of damaged engines with scores cylinders passing compression and leak down tests, I'm sure Jake has mentioned that before, also remove the sump and bore scope from underneath, I bought a used engine and for it shipped directly to my indie for inspection before I handed over the cash , I just agreed to pay for the guys time to bring the engine over �200 , in case problems showed up, good way to have a bit of comeback on a used motor and not just get stuck with another knackered engine!

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