i got a 02 max wit 128k on it and about a week ago i noticed after siting for a while (mainly overnight) once i start it up it makes a knocking noise for about 5 seconds at the most then goes away for the rest of the day.......does anyone know what this noise could be

 

Timing chain tensioner. Got a sound clip?

 

nope i dont have one.....but that sounds bout right tho........how much does that cost to repair

 

check the oil level first, it'll make noise when it's low.