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Secondary air check valve.

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7 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHSecondary air check valve.

Leading reported evidence

Check on the reservoir (#6)

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

Also do a vacuum check on the reservoir (#6).

Original post Read captured discussion
Secondary air check valve.
Read full discussion summary

Leading evidence: 'Check on the reservoir (#6)' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check on the reservoir (#6)' (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.

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1 matching discussions · 7 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace items 9 and 11

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

I'm looking to replace items 9 and 11:

Original post Read captured discussion
Secondary air check valve.

Replace suggest you dismantle 9 and look

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

To help confirm your diagnosis that 9 and 11 need replacing , suggest you dismantle 9 and look for rust or other problems.It is just a simple check valve.

Original post Read captured discussion
Secondary air check valve.

Replace those valves

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

I highly doubt you can replace those valves with only the alternator removed unless you like building a ship in a bottle

Original post Read captured discussion
Secondary air check valve.

Test with a vacuum source

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

11 also can get rusty.Easy to test with a vacuum source.

Original post Read captured discussion
Secondary air check valve.
Frequently discussed actions (5)

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

Check on the reservoir (#6)

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

Also do a vacuum check on the reservoir (#6).

Original post Read captured discussion
Secondary air check valve.

Replace items 9 and 11

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

I'm looking to replace items 9 and 11:

Original post Read captured discussion
Secondary air check valve.

Replace suggest you dismantle 9 and look

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

To help confirm your diagnosis that 9 and 11 need replacing , suggest you dismantle 9 and look for rust or other problems.It is just a simple check valve.

Original post Read captured discussion
Secondary air check valve.

Replace those valves

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

I highly doubt you can replace those valves with only the alternator removed unless you like building a ship in a bottle

Original post Read captured discussion
Secondary air check valve.

Test with a vacuum source

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

11 also can get rusty.Easy to test with a vacuum source.

Original post Read captured discussion
Secondary air check valve.
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: 20261026T052503Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Has anyone replaced this? I think the check valve is what is causing some of my problems. The Bentley manual is telling me that I need to pull the left side intake manifold. Can I get to it by pulling out the alternator?

POST 2Original post

Quotes source post: 13888229

This from Ahsai may get you started: https://www.renntech.org/forums/topi.../?_fromLogin=1 or do you mean this: https://rennlist.com/forums/993-foru...eck-valve.html

POST 3 / ORIGINAL POSTEROriginal post

I'm looking to replace items 9 and 11:

POST 4Original post

I highly doubt you can replace those valves with only the alternator removed unless you like building a ship in a bottle I think you need to remove the alternator in addition to at least the left intake manifold.

POST 5 / ORIGINAL POSTEROriginal post

Thanks for the input Ahsai. I'll be digging into this tomorrow night. Already have a few parts on order.

POST 6Original post

To help confirm your diagnosis that 9 and 11 need replacing , suggest you dismantle 9 and look for rust or other problems.It is just a simple check valve. 11 also can get rusty.Easy to test with a vacuum source. I suggest this because it would be a pity to put all this back together and find there is still a fault -like a vacuum leak. Others may have much better suggestions for diagnostics. Note there may be sources of generic parts for both.

POST 7Original post

Like Schnell says, there can be vacuum leaks. The vacuum hoses get brittle and break, especially if you are in there moving things around. Also do a vacuum check on the reservoir (#6). Mine had a hairline crack - took me two days to track that down.

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