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janasilber2

Seat Ateca engine running rough

Alright, I'm officially stumped. My 2018 Seat Ateca with a gasoline engine is giving me fits. It's got 100603 km on the clock, and lately the engine's been running really rough. The check engine light is on, and I'm getting some error codes. Plus, it's jerking like crazy when I try to accelerate. Could a bad ignition coil or a loose timing belt cause this?

Summary of the thread

A 2018 Seat Ateca with a gasoline engine was experiencing rough running, a check engine light, and jerking during acceleration. Possible causes suggested included a bad ignition coil, loose timing belt, or exhaust leaks. The solution involved checking for exhaust leaks, which were confirmed and repaired, resolving the issue.

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4 comment(s)

miahimmel7

Hey, I had something similar happen with my Ateca, although I can't remember what mileage I was at. Check for exhaust leaks. When did you last change your air filter and spark plugs? Also, have you checked the crankshaft sensor? Those can cause weird running issues too.

janasilber2 (community.author)

Exhaust leaks, huh? Where exactly should I be looking? And could that really cause the check engine light and the jerking? The air filter is new, the spark plugs maybe have some miles on them, and I have never checked the crankshaft sensor.

miahimmel7

Yes, an exhaust leak can definitely cause those symptoms. The engine management gets confused by the incorrect readings from the oxygen sensors. As for location, listen carefully around the exhaust manifold and along the exhaust pipes, especially at joints. If you're not mechanically inclined, it's probably best to get it checked by a professional. It could save you a lot of headaches in the long run.

janasilber2 (community.author)

Took it to the workshop and they found a leak in the exhaust system, just like you said! 265€ later and she's running smooth again. Thanks for the help, really appreciate it!

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SEAT

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ATECA