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2011 Mercedes-Benz E550 5.5L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on
Two random cylinders are always misfiring after startup. Sometimes on the same bank and sometimes on opposite banks. I replaced all spark plugs and smoke tested for vacuum leaks. The intake manifold had a leak. Upon removing the manifold I saw a puddle of ... 
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Related Documents & Media | VIN | WDDKK7CF6B |
| Engine | 5.5 L / 8 cyl / GAS |
| Trans | 7-speed Automatic (Electronic) |
| Delivery | Fuel Injection / Port injected |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Hesitation, Misfire, MIL Lamp On |
| Occurs | Always, Cold, Hot, on Accel, Idle |
Trouble Codes
| P0629 | Fuel Pump Relay Control Circuit High |
| P2393 | The ignition angle setting has a malfunction when cold starting |
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Vehicle Data
2011 Mercedes-Benz E550
| VIN | WDDKK7CF6B |
| Engine | 5.5 L / 8 cyl / GAS |
| Trans | 7-speed Automatic (Electronic) |
| Delivery | Fuel Injection / Port injected |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Hesitation, Misfire, MIL Lamp On |
| Occurs | Always, Cold, Hot, on Accel, Idle |
Trouble Codes
| P0629 | Fuel Pump Relay Control Circuit High |
| P2393 | The ignition angle setting has a malfunction when cold starting |
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