Mercedes SL rough running and misfire issues

My 2008 Mercedes SL with a gasoline engine is running rough with 254246 km Lately it's been running super rough almost like it's going to stall The check engine light is on and when I try to accelerate it jerks and feels like I'm driving with half the engine power I scanned it and it's throwing combustion misfire codes Could this be a fuel injector or fuel pump issue I've checked the ignition coil and they seem ok Any ideas

4 comment(s)

Combustion misfires in that engine usually point to fuel delivery issues A defective fuel injector is a likely suspect Have you noticed any changes in throttle response before the misfires became consistent

Throttle response has felt a bit sluggish lately It's not a huge difference but it's definitely not as crisp as it used to be If it is a fuel injector is that something I can tackle myself or am I better off taking it to a shop

Given the symptoms and the mileage a faulty fuel injector is highly probable Based on what you're describing I would suggest getting it professionally diagnosed You'll likely need specialized tools It's best to avoid further complications

I took it to a trusted workshop and you were spot on It turned out to be a defective fuel injector The total repair cost including parts and labor came to 515€ It's running smooth as new now

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