Hey Scotty. I have a 2003 Mercedes e320 V6..... I recently had a MAF sensor go bad and then a cylinder 4 misfire happened. I took care of the sensor issue and now I don't want to drive my car with the misfire. It starts up and drive just fine but has a weird smell at idle and loss a little bit of power. I don't want to spend a bunch of money on guessing. What could be causing the misfire?

first, that's a big time endless money pit car when 15 years old. But you want a cheap guess, change the #4 coil in plug assembly and the spark plug and pray. Then if you don't want to spend money,get rid of that thing FAST