6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH996 Water and Oil Intermix
Leading reported evidence
Repair cracks
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.
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
Do I send both to the machine shop so the head that is not bad could be checked and the valves guides and seat cleaned / refitted / fixed / improved, so I can have both heads in a OK shape?
Leading evidence: 'Repair cracks' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean / refitted /' (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.
Suggestion · Original poster
Do I send both to the machine shop so the head that is not bad could be checked and the valves guides and seat cleaned / refitted / fixed / improved, so I can have both heads in a OK shape?
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
I can’t remember the brand but i5 had been recommended by others on the forum for just this type of situation.
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
+ Oil pressure sensors + wherever you guys tell me it's a good time to change)
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Clean / refitted /
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
Do I send both to the machine shop so the head that is not bad could be checked and the valves guides and seat cleaned / refitted / fixed / improved, so I can have both heads in a OK shape?
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.
6 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Pelican Parts: 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: 20261027T070717Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Dear Friends,
I have a 2000 996 with an unknown history with 90 K miles and unfortunately there is a lot of oil on the water reservoir but no water on the oil, and here is what I know about the car
- I did not make any leak/compression test
- The oil cooler was pressure tested and its ok
- The AOS was not tested
- There is a lot of oil in the water reservoir, but the oil on the deep stick is very, very clean
- I don't know if the WP was replace any time, don't have the car here with me now, to see if the gasket was cutted
- No matter what I'll put the engine/transmission out ( to try to fix this issue + IMS + Clutch +WP + OAS + Coolant Hoses + Water reservoir + Vacuum lines?! + Oil pressure sensors + wherever you guys tell me it's a good time to change)
But my questions are:
1-) Let's assume this whole problem was the OAS (not likely) could a faulty OAS cause that much oil in the coolant system?
and if yes, how can I double check this info before disassemble the heads ( which is going to be another can o worms)
2-) Now let's assume the head is cracked, how do I check for this? Is the only way to check this is but tearing down the whole thing?
3-) Once I have the heads out, how do I check if they are cracked? Sent to a machine shop or use some type of dye?
4-) Most of people say that its the head 1-3, but then again, what if it's both or bank 4-6? So my question is:
Do I remove both, no matter what?
Do I send both to the machine shop so the head that is not bad could be checked and the valves guides and seat cleaned / refitted / fixed / improved, so I can have both heads in a OK shape?
5-) Once I remove the heads, how can I check if the block/cylinders lines are not cracked as well? Is there some kind of dye to do this job or again, I'll have to ship the whole assembly to a machine shop to be checked?
6-) I heard that there are 2 kind of bolts that holds the heads on the block, where one is a elastic one the other one it's not? Is that true? If yes how can I know which one my engine use?
Thank you all for the help and I hope some of those answer could help out JIM R as well
2 years ago I purchase a 99 996 with a known intermix problem. I removed both heads and sent them to Hoffman,
https://newsite.hamheads.com/porsche/
and they repaired the cracks on the right head. While there I had them pressure test both heads, surface them replace the guides and grind the valves. They did an excellent job. Highley recommend!
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Sure, I “flushed it” numerous times with a strong detergent and hot water. I can’t remember the brand but i5 had been recommended by others on the forum for just this type of situation.
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Flush it all you want. Until you have stopped the oil from entering the cooling system (which it will as it operates at higher pressures than the cooling system) you are wasting your time chasing your tail. The 2000 model year has suffered more cracked head issues than any other model year. Do a quick search for that and see what comes up.. Sounds like your issue....
You need to remove the heads to check and confirm....
This is a source reference. Confirm exact model applicability in the original material.
