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vaccum lines on 1998 2.5 - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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YOUR RESEARCHvaccum lines on 1998 2.5 - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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Replace things

Performed · outcome unconfirmed

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Unsuccessful attempts: 1
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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.

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Performed · outcome unconfirmed
Sounds like someone has messed/changed things but hard to tell from just your description.
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vaccum lines on 1998 2.5 - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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
Sounds like someone has messed/changed things but hard to tell from just your description.
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vaccum lines on 1998 2.5 - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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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.

5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

986Forum: 1 discussions

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Generation: 20261027T031046Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Chasing vaccum leaks on my 1998 Boxster 2.5. i have a vaccum line from my left rubber sleeve on the plenum (Seen from behind). It is delivering vaccum to the fuel pressure regulator. The right rubber sleeve also have a similar hole in it, but this is blocked of with what seems to be a factory made metal stud. Is this setup correct, or has someone modified the system, and if yes, what problems could this cause?

POST 2Original post

Look for my posts about vacuum diagram, will have pictures to show you what connects to what. also, another thing that will help you is to download the Porsche PET from their web site. It has all of the parts, pictures & part numbers. Easier to see it then describing. Pictures also help with what you are referring to. Sounds like someone has messed/changed things but hard to tell from just your description.

POST 3Original post

Is your car North American or Euro? Tiptronic or manual? As a 1998, it should have vacuum from the plenum boot to the fuel pressure regulator. If it's North American, should have a second vacuum source with a black and white check valve going to the secondary air injection system. If it's Tiptronic, that vacuum source should also go to a valve for the transmission heat exchanger. It should not have the second cross-tube and resonance valve that is shown in many diagrams (for the 2.7L and 3.2L engines).

POST 4 / ORIGINAL POSTEROriginal post

The car is Euro spec, and not tiptronic. Maybe it is correct with just one vaccum line going to the fuel pressure regulator then?

POST 5Original post

Like I said, get the PET. It will help you. https://www.porsche.com/central-eastern-europe/en/accessoriesandservice/classic/genuineparts/originalpartscatalogue/ Same conversation with another person this past week. Post is: Car Dies

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