Hi Guys My 98 make`s a ugly grr -grr noise on start upbut goes quite after 5 sec and the motor is getting louder every day. I took the oil filter off and saw small metal pieces. I took the car off the road. What do you guys suggest what must i do.Today i`m gone check the belt tensioner and if it not it i`m gone drain oil and drop the sump for further investigation. If the big-ends are gone can i just replace them????