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Dirt and Buildup around Oil Pump?

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHDirt and Buildup around Oil Pump?

Leading reported evidence

Check air oil separator

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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
Time to check your AOS using a manometer on the oil fill cap.
Original post Read captured discussion
Dirt and Buildup around Oil Pump?

Suggestion
Correct and appropriate to check the AOS.
Original post Read captured discussion
Dirt and Buildup around Oil Pump?

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

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1 matching discussions · 3 captured posts examined · 0 partial discussions

Compare 3 other evidence results

Replace coil packs and plugs and decided

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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
Replacing coil packs and plugs and decided to remove the mufflers.
Original post Read captured discussion
Dirt and Buildup around Oil Pump?

Use manometer

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
Time to check your AOS using a manometer on the oil fill cap.
Original post Read captured discussion
Dirt and Buildup around Oil Pump?

Use real battery tools like impact wrenches

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
Ironically, this is my first time using real battery tools like impact wrenches.
Original post Read captured discussion
Dirt and Buildup around Oil Pump?

Frequently discussed actions (4)

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

Check air oil separator

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
Time to check your AOS using a manometer on the oil fill cap.
Original post Read captured discussion
Dirt and Buildup around Oil Pump?

Suggestion
Correct and appropriate to check the AOS.
Original post Read captured discussion
Dirt and Buildup around Oil Pump?

Replace coil packs and plugs and decided

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
Replacing coil packs and plugs and decided to remove the mufflers.
Original post Read captured discussion
Dirt and Buildup around Oil Pump?

Use manometer

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
Time to check your AOS using a manometer on the oil fill cap.
Original post Read captured discussion
Dirt and Buildup around Oil Pump?

Use real battery tools like impact wrenches

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
Ironically, this is my first time using real battery tools like impact wrenches.
Original post Read captured discussion
Dirt and Buildup around Oil Pump?

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.

3 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: 20261026T113718Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Replacing coil packs and plugs and decided to remove the mufflers. I am old and it makes it easier. This was also a good chance to take a good look around the engine. There is a small oil leak indicative of a main oil seal issue which will need to wait until doing the IMS at some point. But I was surprised by this dirt that is indicative of oil that collects dirt and crud. This is on the passenger side of the engineer around the oil pump. This is a 2003 C4S by the way. Nothing obvious. Cleaned it up and will monitor, but I thought this brain trust might have an idea of what to look for. This is a closeup of the only "wet" visible. Most of my history working on cars has been Porsche 914s, original Mini's, and Sports 2000 racecars (and other open-wheel cars), so working on such a "big" car has been both challenging and fun! Ironically, this is my first time using real battery tools like impact wrenches. It was so much fun to apply a bit of heat to the exhaust bolts, and then just spin them off with the tool!

POST 2Original post

There is a breather valve above this area that will open and vent crank case gasses if/when the AOS becomes faulty. Time to check your AOS using a manometer on the oil fill cap. I think the desired pressure range is -4 to -5 mm Hg. There are plenty of threads outlining how to do this.

POST 3Original post

Quotes source post: 19401109

Correct and appropriate to check the AOS. Also, check valve or O ring can fail, also causing leak w healthy AOS.

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