hello i have a 2001 300m and i have a few problems with it ok first for the last couple of months when ever i am driving when ever i press on the gas there is this loud rattling noise that sounds like its coming from under the hood i have been to a garage with itand they seem to think it's my converter you can put the car in reverse and hold on the brake and give it some gas and you can here the noise clear it sound's like it comeing from the passanger side right next to the motor has this happened to anyone else or does anyone know what this might be? p.s when i here the noise it fells like my caris loseing power while the rattling is going on..

and my next problem just started my car ran out of gas and my engine light came on i went to auto zone and they ran a test and it said there was a misfire on four of my sparkplugs so i changed all 6 spark plugs and the littleruber boots that sit on top of my sparkplugs my engine light has gone off but now when i go to accelerate the car fells like it wants to kind of be slugish and it jerks back for a second like its not getting gas to the fuel tank do you think it needs to be replaced or has anyone had this problem

 

cant help u with the noise but the other i bet u out in some bosh plugs from auo zone did u not?
bad idea if u did get champions and replace them plus make sure u gap them correctly.

 

thanks for the reply and yes i went with champion spark plugs