 
				
	| 2012 Mercedes-Benz C250 1.8L Excessive Emissions, Misfire, Poor Fuel Economy, MIL Lamp on car came in running,found fuel trims were at max.i used propane and found leaks around intake so I replaced intake gaskets and rechecked still seams that the propane will affect the fuel [...] wondering what I may be missing?no other leaks are [...] help w... 
                        
                            FIX posted 7/6/2019
                               
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| VIN | WDDGJ4HB7C | 
| Engine | 1.8 L / 4 cyl / GAS | 
| Trans | 7-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Emissions | OBD-II Compliant | 
| Symptoms | Excessive Emissions, Misfire, Poor Fuel Economy, MIL Lamp On | 
| Occurs | Cold, Idle | 
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) | 
| P0303 | Cylinder 3 Misfire Detected | 
| P0304 | Cylinder 4 Misfire Detected | 
Message Closed
            
             Vehicle Data
 Vehicle Data
                2012 Mercedes-Benz C250
| VIN | WDDGJ4HB7C | 
| Engine | 1.8 L / 4 cyl / GAS | 
| Trans | 7-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Emissions | OBD-II Compliant | 
| Symptoms | Excessive Emissions, Misfire, Poor Fuel Economy, MIL Lamp On | 
| Occurs | Cold, Idle | 
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) | 
| P0303 | Cylinder 3 Misfire Detected | 
| P0304 | Cylinder 4 Misfire Detected | 
 3 Replies Received
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