Just purchased a 996 that is consuming coolant. I knew this when I purchased it but since I have another good 3.4 I bought it anyway. It is a shame because this one runs excellent. I plan on putting my good 3.4 in and rebuild this one to put back in. I believe that the issue is going to be a cracked cylinder based on the symptoms and I guess I was looking for confirmation. Definitely loosing coolant but it is clean and clear, definitely no intermix in the coolant. The oil was high when I got it so I removed a quart to get it down below full. The oil I took out is black and I don't see any indication of intermixed there either. The engine starts easily and idles smoothly with no smoke whatsoever. I took it for a short drive and saw no smoke until it warmed up. Once it warmed up I saw the smoke when accelerating. When I stopped I had white smoke coming out of the passengers tailpipe and it had a sweet odor. Is there anything besides a cracked cylinder that would cause burning coolant only when warm with no intermix?
Discussion summary
YOUR RESEARCHAnother coolant burner
1 matching discussions were examined; no attributable action/outcome evidence was detected. No consensus or repair conclusion is claimed.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Read captured repliesInsufficient extracted evidence does not mean there is no answer in the original discussions.
1 matching discussions · 2 captured posts examined · 0 partial discussions
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.
2 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: 20261027T075545Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Sounds like a cracked head. It opens up when hot.
This is a source reference. Confirm exact model applicability in the original material.