richardhuber4
Skoda Yeti rough running diagnosis
Summary of the thread
A 2012 Skoda Yeti with a gasoline engine is experiencing rough starting, high fuel consumption, reduced power, uneven idling, and occasional stalling. The initial suspicion is a dirty injection valve. A faulty injector is confirmed as the cause, and replacing it resolves the issues, improving engine performance and potentially restoring emissions to normal levels.
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4 comment(s)
richardhuber4 (community.author)
You mention checking the error codes. Which ones specifically indicated a problem? And did you also experience increased fuel consumption?
ChrisBran
The error codes pointed to a misfire on cylinder 3, which initially led me down the path of spark plugs and coil packs. Eventually, it was diagnosed as a faulty injector. Yes, my fuel consumption went up noticeably before the engine started running really rough. If it is indeed the injector, I suggest getting it sorted quickly. Raw gasoline washing down the cylinder walls is never a good thing. Best to take it to a competent workshop.
richardhuber4 (community.author)
The workshop confirmed a faulty injection nozzle. Replacing it made the engine run smoothly again. It cost 515€. Hopefully, the emissions will be back to normal now.
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SKODA
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YETI
ChrisBran
Sounds suspiciously like a fuel injector problem. I had similar symptoms on my Yeti. Has the 'check engine' light illuminated? When these gasoline engines misfire, it can damage the catalytic converter. Do you smell gasoline in the oil? Do you have access to VCDS to check the error codes? It is like a clogged artery restricting blood flow to your engine. These new gasoline formulations are not helping.