Clunk sound on 2013 C250

Question by frankmadera posted 2 months ago in 2008-____ (W204)

The car has starter having a loud clunking sound from the top of the entine or mid engine im not sure, it only happens under 1500 revs. I replaced the spark plugs, the battery, and the camshaft sensor But nothing changed, the next thing I'm going to change is the knock sensor but if anyone knows what the sound might be id be very appreciative. The car also cranks but doesnt turn, it rarely turns on i had the alternator checked and its in good condition, any advice would be great!