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I have a mercedes c230 kompressor 2004 and the engine is not…

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Hello i have a mercedes...
Hello i have a mercedes c230 kompressor 2004 and the engine is not running so good i have got p0313 p0300 p0171 p0304 p0420 and the fuelsys 1 goes to cl fault what could be the problem ?
Submitted: 8 months ago.Category: Mercedes
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Answered in 12 hours by:
11/13/2017
Mercedes Mechanic: Marty, Mercedes Technician replied 8 months ago
Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 55,216
Experience: Bosch Certified Master Tech. Over 35 years experience.
Verified

Hi, my name is***** have some misfire fault codes and a fuel mixture fault code. The fuel mixture codes should be addressed first. Vacuum leaks at the intake system underneath the manifold are the most common problem. Start by having the intake system smoke tested for leakage and repair all intake leaks. Once you fix the mixture codes your misfires will probably go away. Other possibilities are a bad mass air flow sensor and a fault with the spark plugs or ignition coils. Remember, ignition faults will not cause mixture codes but mixtures codes can cause ignition faults. Fix the mixture codes first.

Let me know if you have any questions.

Marty

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