16 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHMarvel Mystery Oil and Cam Chain Tensioners - Heating the oil? Any other advice?
Reported or suspected cause
volatile vapors given off by the liquid being heated
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
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 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
"Flashpoint" is due to volatile vapors given off by the liquid being heated.
Marvel Mystery Oil and Cam Chain Tensioners - Heating the oil? Any other advice?
Read full discussion summary
Leading evidence: 'volatile vapors given off by the liquid being heated' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'volatile vapors given off by the liquid being heated' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Clean engine oil - and pumped them by hand' (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 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 just submerged mine in clean engine oil - and pumped them by hand.
Marvel Mystery Oil and Cam Chain Tensioners - Heating the oil? Any other advice?
Clean oil appears
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
Partially submerge them and pump on the pistons until clean oil appears and then reinstall..
Marvel Mystery Oil and Cam Chain Tensioners - Heating the oil? Any other advice?
Recommend by jake raby, and he seems
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
It is a procedure recommended by Jake Raby, and he seems to be incredibly knowledgable and experienced with this stuff.
Marvel Mystery Oil and Cam Chain Tensioners - Heating the oil? Any other advice?
Set off quite an explosion...and you'd be covered
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 need to be extremely careful - especially for sources of static electricity - a static spark could set off quite an explosion...and you'd be covered with flaming liquid Marvel Mystery Oil...not good!!!
Marvel Mystery Oil and Cam Chain Tensioners - Heating the oil? Any other advice?
Set off quite an explosion...and you'd be covered
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 need to be extremely careful - especially for sources of static electricity - a static spark could set off quite an explosion...and you'd be covered with flaming liquid Marvel Mystery Oil...not good!!!
Marvel Mystery Oil and Cam Chain Tensioners - Heating the oil? Any other advice?
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.
16 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: 20261026T133652Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I have the cam chain tensioners out, and before reinstallation I'd like to service them. This is a new procedure to me.
Jake Raby posted this on another forum: "Sounds like classic tensioners to me.. Pull them out and clean them with some Marvel Mystery oil heated to around 160F... Partially submerge them and pump on the pistons until clean oil appears and then reinstall.. You should be good to go."
I picked up some Marvel Mystery Oil at the hardware store (haven't seen this stuff in years). Any advice for how to safely heat the oil? Open flame seems like a bad idea with oil...
I have a IR thermometer so I should be able to figure out when it is hot enough.
I have new sealing rings and o-rings.
Any other tips on this job?
PS. I still have the crank locked at TDC and the cams locked down.
Please read:
http://www.audiosears.com/MSDS/FS043...tery%20Oil.pdf
The flash point is 128F.
Most ultrasonic cleaners should be able to get to that temp. You should probably heat the tensioners before you submerge them.
All in all this sounds like a terrible idea. Please do this outside, with a chemical extinguisher close by.
Thanks for the idea and info. All of our home heating is gas, so that's out, no electric burners in our place. I'll pick up a hotplate for the garage - I haven't seen one of those in years either. I'm sure it will come in handy for other things.
That way, no open flames to worry about. Hopefully set on low in a well ventilated area it will be less of a hazard.
I'm not sure I understand the flash point information. Is this unsafe?
It is a procedure recommended by Jake Raby, and he seems to be incredibly knowledgable and experienced with this stuff.
"Flashpoint" is due to volatile vapors given off by the liquid being heated. These vapors would explode if subjected to an open ignition source (i.e. spark or open flame). As such if the flashpoint is 128F, at 160F you'd be producing lots of volatile vapor. You need to be extremely careful - especially for sources of static electricity - a static spark could set off quite an explosion...and you'd be covered with flaming liquid Marvel Mystery Oil...not good!!! be careful
