kevinsky96

GLC Hybrid Engine Running Rough Check Engine Light

My 2023 Mercedes GLC hybrid engine is running rough and the check engine light is on with nearly 287649 km. I'm also noticing some jerking when accelerating. The error memory has something stored, but I haven't had a chance to pull the codes myself yet. Could this be something simple like a fuel pump issue, or something more involved like fuel injectors, crankshaft sensor, ignition coil, or even the timing belt?

4 comment(s)

I had similar symptoms in my GLC a jerking on acceleration and a rough idle. Have you checked for any exhaust leaks? It could be something like that, affecting the engine's ability to breathe properly. It's like trying to run with a restricted airway.

Exhaust leak, huh? Where exactly should I be looking for that? Is it something I can easily spot, or does it require special equipment to find?

Honestly, unless you're really familiar with exhaust systems, it's tough to pinpoint the exact location without proper tools. It's best to take it to a workshop. They can do a smoke test and find the leak quickly. I went that route, and it turned out to be a cracked exhaust manifold.

Thanks for the tip! Took it to a workshop, and you were spot on it was a leak in the exhaust system. Repair cost me 265€. Runs like new now!

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