320 CLK won't start

[mr.tench]

Hi, My CLK 320 has just let me down. The engine cranks but won't start. it runs lumpy for about 10 - 15 secs then stops. Fortunately this happened on my driveway. It ran fine this morning. Is this a symptom of an air flow sensor failure?
Thanks.

 

[rorf]

Usually the Crankshaft Position Sensor which needs replacement - 10 minute job. A blocked fuel filter can also cause this problem

 

[pcthrillrider]

do the job correctly, read the dtc codes delete them,try again if same code comes back thats your problem

 

[rorf]

Most times a faulty crank shaft position sensor does not show up codes

 

[rorf]

Disconnect the MAF to see if there is any change when running, if not then MAF is faulty