Hi all first post so please be gentle, I bought a clk320 cab (w208) in august and everything was running fine, at the beginning of november the car started to feel lumpy. After reading this forum for a few days I decided an odb2 scanner was essential to find out what my problem was, got a bluetooth scanner and torque app codes showing as p0301 and p0201 (misfire cylinder 1 and injector circuit cylinder 1)
I have since (with lots of help from this site) changed the air filter , spark plugs(old ones were in decent condition, no cracking, looked clean not oily and no real signs of wear, swapped coils and leads separately to see if misfire followed with no luck, I've also changed cps as old one was filthy. I have also checked my MAF it was as clean as a whistle and the readings are 4.5g/s at idle peaking to around 50g/s at peak acceleration (is this right)
Once the car is up to operating temp about 87c if I stop engine and start again the misfire is no longer there and the codes eventually clear ready to return when I start from cold again. Would a faulty/dirty injector start working when warm? Or Could this issue stem from coolant temperature sensor or thermostat.
Please help mbclub you're my only hope. (Btw sorry about all the brackets )
I have since (with lots of help from this site) changed the air filter , spark plugs(old ones were in decent condition, no cracking, looked clean not oily and no real signs of wear, swapped coils and leads separately to see if misfire followed with no luck, I've also changed cps as old one was filthy. I have also checked my MAF it was as clean as a whistle and the readings are 4.5g/s at idle peaking to around 50g/s at peak acceleration (is this right)
Once the car is up to operating temp about 87c if I stop engine and start again the misfire is no longer there and the codes eventually clear ready to return when I start from cold again. Would a faulty/dirty injector start working when warm? Or Could this issue stem from coolant temperature sensor or thermostat.
Please help mbclub you're my only hope. (Btw sorry about all the brackets )