Being a 'trained' mechanic, I should know this but I've been out of the game for a while so need some advice! Just got a Fiat Bravo 1.4 SX (my first car! ) and it starts OK but makes a horrible grinding noise just after it starts and the noise goes away after a second or two. Does anyone have any idea what it is? This is my first port of call and you guys are technically-minded so ... ! Thanks!