phatty123

I have a 2004 c240. It has no codes currently. It is having a tough time starting. I have to pump or feather the throttle pedal to get it to start. After it starts it blow unburnt fuel out of the exhaust. After it warms up it runs great. If I pull the battery cable and let the ecu reset it will start up normally 4 or 5 times then be hard to start again. I replaced the maf and bank 1 upstream 02 sensor. The sensor went bad because of all the raw fuel being dumped on to it. Plugs were replaced about a year ago. With no codes and it running fine once it's started I am kind of lost on where to look. Any help would be appreciated.