Mercedes AMG GT Hybrid Engine Issues

My 2023 Mercedes AMG GT Hybrid is giving me some trouble I'm getting a check engine light, occasional engine stalls at idle, and reduced engine power The car has about 287398 km on it I recently changed the fuel filter and suspect that might be related I'm thinking maybe the fuel pressure regulator is defective, possibly from an error entry during the fuel filter change Could that be affecting the fuel rail pressure sensor or even the fuel pump It feels like it's messing with my fuel efficiency too Any ideas on where to start checking for a rough idle

4 comment(s)

That sounds frustrating Is it possible the fuel line isn't properly connected after you changed the fuel filter A loose connection could definitely cause a pressure drop and trigger those symptoms

Thanks for the quick response I double-checked the fuel line connections, and they seem secure Could a faulty pressure sensor be giving the wrong readings, even if the connection is solid Is there a way to test the fuel pump, or should I focus on diagnosing the fuel rail and the regulator first

Considering you've checked the lines, a failing pressure sensor is plausible However, I'm not qualified enough to give specific diagnostic instructions I'd advise you to take it to a trusted workshop; they will be able to properly diagnose the issue

Thanks for the advice It turned out you were right; it was related to the fuel pressure regulator After a bit of digging, found an error entry during the fuel filter replacement Replaced the regulator for 45€, and it seems to have fixed the problem Appreciate the help

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