15 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCan anyone identify this area of the 996 engine?
Leading reported evidence
Replace twice
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.
Leading evidence: 'Replace twice' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'rubber bellows is split and leaking some oil' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Clean mune up a little' (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 suspect a cause
1
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Suspected cause
That is right below the AOS, I suspect the rubber bellows is split and leaking some oil.
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
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Suggestion
I did clean mune up a little before I put it back in, but it is hard to get all that corrosion off without a chemical cleaning.
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
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Suggestion
You can replace the flange/seal or use a little sealant.
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 replace the flange/seal or use a little sealant.
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.
15 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
Under car, rear left of engine, attached to crankcase. Oddly shaped box with a cap on the left side sealed with a gasket. Mine appears to be leaking an oily residue around the seal. It's not dripping, but I suspect I need a new gasket.
Bumping cause curiosity is killing me. I can't find anything about this area in the shop manuals as they seem to focus only on the right side of the engine. My best guess is that this area houses an oil evacuation pump for the left head. Any ideas? Bueler?
The valve cover is pretty big. There are two cams on top and bottom covered with the center having the spark plug coils. Both ends have sort of chanels for cam chains in front then bearing in the rear. Inboard of the valve cover in the area you mention rear left is a halls sensor for the cams. But its located on the back side of the engine inboard of the valve covers. There are two should be cam caps that should be light green. Right now only thing I can think of is a coil pack sitting on a sparkplug. If you have the service manual try page 2-8 for an idea of what you are seeing part of.
That is right below the AOS, I suspect the rubber bellows is split and leaking some oil. Very hard to tell with the bad picture.....
Rick
99 996C4
87 944S
Check to see if it is leaking around the solenoid for the cam advance. This is a pretty common leak. You can replace the flange/seal or use a little sealant. These pictures might help.
I don't know why they called the part of the engine that faces the front of the car the "rear" of the engine. Except for midengine Porsche #1in 1948 the fan or pulley end of 356\911\912.. engine always faced the rear of the car. That is until 914 brought mid engine back.
That my friends is an engine that was in a car that went through 8 or 9 Chicago Winters. I drive my car year round, rain snow or whatever, non of this concours crap for me (although I am a little jealous of the way Orients engine looks, but then he lives in CA). I did clean mune up a little before I put it back in, but it is hard to get all that corrosion off without a chemical cleaning. The head I had fixed looked like new when it went back in. But that was last fall, after this winter it probably is not looking that good.
The AOS in the pictures is the original one on the car. It was actually replaced twice. Once when I first put the engine back together and in the car. That one, which was "NOS" failed quickly, and then I bought the latest version through Sunset.
The engine was pretty messy when I first dropped it. The intermix took place in 9/08 and I parked the car over the next 6 months in my garage. Chipmunks or something took up residence on the top of the engine as the next spring when I started working on it the top was covered with seed shells, etc. Before I took out the engine I pulled off the oil cooler to test it, which also made quite a mess. The engine really did not have any bad leaks, other than the cracked head that is.
It had leaked around the cam solenoids once and they had been sealed by my indy with what looked like JB Weld.
