22 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHLots of white smoke on startup AOS?
Leading reported evidence
Replace previous owner claimed
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.
Performed · outcome unconfirmed · Original poster
The previous owner claimed that it was changed prior to his ownership.
Leading evidence: 'Replace previous owner claimed' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check /done' (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.
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
Ballpark figure as to how much this repair will cost?
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.
22 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: 20261026T152433Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
This happens every time I start the car, crop duster amount, very bad.
It clears up pretty fast.
I tried to unscrew the oil filler cap when idling, no way, it's not budging.
My car is a 2002 C4S.
Whatcha guys think?
Thanks, Pete
Thank you for the quick replies.
I don't think I will tackle this job myself.
Ballpark figure as to how much this repair will cost?
My car has a Tip if that makes a difference.
You need to call around and find an experienced trusted shop that knows Porsche cars. The job is difficult (major PITA) with the engine in the car. From what others have posted figure $1200-$1500 with engine in car. Depending on age/mileage, there might be a lot of "while you are in there" costs added.
Hydro lock is a real possibility (ask me how I know!). I got lucky, but if I were you I'd flatbed that baby to whoever you choose to do the job. Cheap part that is hard to get to = way too much money, but you have no choice.
Get the AOS replaced as quickly as you can...don't let this simple wear item cause damage to your engine.
The AOS is an inexpensive part, ~$120-150, the shop will charge you between 4 and 8 hours of labor. Cost depends on the labor rate at your shop of choice. Budget $1000, your bill will likely land between $800 & $1200.
I don't usually subscribe to the stop-driving-fix-it-now mentality, but the amount of oil it takes to hydrolock an engine is measured in ml, not cups or quarts...
Beautiful machine Pete! You're making the right decision IMHO. Curious, how much do you drive this car? Was it stored up for the winter and you just now getting it back on the road? Or, do you drive it on weekends and just noticed the problem?
I stored it all Winter in a heated 60 degree garage.
First drive of the season everything was fine, when I started it for the second time it was smoking badly.
I guess these cars really need to be driven.
Nothing else really.
Less then 12,000 miles ago, spark plugs, coils, water pump, belt, coolant tank and Tip trans service was all done at the same time.
The previous owner claimed that it was changed prior to his ownership.
He had no documentation proving that it was done.
He had a stable of cars mine being the runt, seemed like a stand-up guy and the price was right so I took the chance.
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