14 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCylinder Liner
Leading reported evidence
Check liners
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 · Original poster
The mechanic checked the LINERS before installing and suspected two were cracked.I asked him why he thought so as no crack was visible.He said it was a practical test by hitting /sounding a wrench lightly on the liner.
Leading evidence: 'Check liners' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check aluminum parts' (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.
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
The liners are infused with cast aluminum and can sound different when "tested" by hitting them with a wrench handle.
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
Or one can have the castings tested via ultrasonic testing, too.
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
There is a dye test for checking aluminum parts for cracks.
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
I wouldn't accept the method of checking the liner by banging it with a wrench
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 · Original poster
The mechanic checked the LINERS before installing and suspected two were cracked.I asked him why he thought so as no crack was visible.He said it was a practical test by hitting /sounding a wrench lightly on the liner.
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
The mechanic checked the LINERS before installing and suspected two were cracked.I asked him why he thought so as no crack was visible.He said it was a practical test by hitting /sounding a wrench lightly on the liner.
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.
14 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: 20261027T173940Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I was getting my engine overhauled , Cummins QSM 11 , and bought a complete EOK.
The mechanic checked the LINERS before installing and suspected two were cracked.I asked him why he thought so as no crack was visible.He said it was a practical test by hitting /sounding a wrench lightly on the liner. Is that how you can tell?
I only recently knew what Cummins is after the Aus Discovery Chanel started airing "Diesel brothers" which has sparked some curiosity in me. Wow the US has some BIG trucks!
If the engine was not manifesting any signs of cracked cylinder liners before you decided to overhaul the engine the cylinders are fine. Probably.
The liners are infused with cast aluminum and can sound different when "tested" by hitting them with a wrench handle. How the wrench is handled/gripped can affect the sound too.
There is a dye test for checking aluminum parts for cracks. Or one can have the castings tested via ultrasonic testing, too. This 2nd technique can find cracks that have not reached the surface.
If you are concerned look into having the cast aluminum parts tested ultrasonically (first choice) or by penetrant dye (2nd choice).
I retired as a Cummins factory trainer, don't know where you got the info of aluminum being infuse in the QSM or ISM liner. I wouldn't accept the method of checking the liner by banging it with a wrench
if you suspect it of being crack, use a NDT (non destructive testing) are you using OEM liners and pistons ? I don't ever remember having a liner issue with the QSM or ISM. I've been involved in many overhauls and done many of them.
QSM engine can be used on anything off-road, such as heavy equipment, generators, and also boats. ISM is for on-road, the ISM plants got moved to China since they haven't met emissions since the start of 2010.
Sorry I misread the OP's post.
We don't get many Cummins engine questions here and my guard was down and I missed the fact the OP was referring to a Cummins engine and not a Porsche engine.
This is a source reference. Confirm exact model applicability in the original material.
