Engine sounds like it's misfiring on cold start-up (actually since I detailed on the weekend) Starts first time, sounds very rough. No CEL at any time, and it does seem to go away after I've driven for a while. Either that or I just can't hear it when on the road. Likely that I could have a misfire and no CEL at all? Dealer listened to the (now warm) engine and said 'they all run rough at start-up' 03 C2 with 8,500 miles. Chris.
Discussion summary
YOUR RESEARCHMisfire at start-up - no CEL
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.
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1 matching discussions · 2 captured posts examined · 0 partial discussions
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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.
2 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: 20261026T174436Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
If it was a misfire you would feel it while driving, I think its possible to have a dirty MAS air, do a search and there are a few good tips on how to clean it. Your dealer is an idiot they dont all run rough on start up, Find a new dealer.
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