So all of the sudden, I have this strange noise, thast sounds like the firing order is wrong, but its not, the more rpm the ticks or knocks. my mechanic is charging me $500 to find it out, and well, it just got back from him, so I dont want to be shedding out more money. (got new brake). im getting the crank shaft sensor replaced, cause it would randomly die. So getting that changed for $300. Butbany idea on what this noise could be? Oh its w124 m119 (e420) so yes, hopfully you guys can help, if not, I dont know, you maybe might see a sell add in the car threads.