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2003 C230 missing with code P0301

6K views 4 replies 2 participants last post by  darryltravis 
#1 ·
I have changed the load vent hose to crankcase and now it runs with a miss sometimes, real bad. Moved coil from first cylinder to second cylinder and still get P0301. Plugs have been changed too. What else could it be? Any problems with injectors in this model? Please help.....each time I submit a question someone always has a great response.
 
#4 ·
There was a bulletin for this code relating to burnt exhaust valves. The first thing they want you to do is run the car at 4000rpm for 10 minutes, standing still of course. This basically cleans the valves. I cant say if this works because I never tried it myself but seen it done at work. Its logical though. i"d do like 3500 since 4000 is max before it cuts out without load.
 
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