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Siena engine misfire

Having trouble with my 2018 Fiat Siena gasoline. At around 26291 km, the engine misfires. Rough running, check engine light, jerking when accelerating, and less power. I checked the spark plugs already. Anyone else seen this, and what should I check?

The 2018 Fiat Siena is experiencing engine misfires, rough running, a check engine light, jerking during acceleration, and reduced power. The issue was identified as a faulty fuel injector, confirmed by a workshop diagnosis. Checking and replacing the fuel injector resolved the problem.

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4 comment(s)

Hey, I also own a Siena and had very similar issues. Rough idle, check engine light, the whole shebang. For me, it turned out to be a faulty fuel injector. Have you checked those?

Thanks! How did you figure out it was the injector? Did you get any error codes or test the resistance?

I didn't do any tests myself. The symptoms looked similar, so I took it to a shop, and they found the injector issue. Repair was around 515€. Misfires can be tricky, so I'd suggest doing the same.

Thanks for the advice! I took it to a workshop, and they also said it was a bad injector, just like you said.

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FIAT

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SIENA