Here is the situation, My car is making a knocking noise Had somone listen to it and they used a stethescope..Sounds like its comming from the top end on the left side..He belives it is the timing chain tensioner cause the chain to slap around. anyways I just drained my oil and there are metal shavings in it, what should i do? I want some opinions on what everyone thinks it could be and what i should do. SHould i pull the front cover and Check the chain or It was also suggested that i should go ahead and pull the motor and go from there. what do you think?