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Every time the car is started, mainly when it’s cold it makes a loud rattling noise for a while and then if you rev up the motor it tends to go away.i changed the tensioner pulley thinking that would solve it but no luck. Please anyone have same issue help!! And it’s not low on oil already thought that. 2006 Suzuki Forenza

My toyota lj70 with 1kzt 3.0 engine also does that and it s also the blue smoke coming from the exhaust. After reving it s all good :( pls help. I might think it s because of the turbocharger which is worn.