It is very possible thats your noise. I cant attach the diagram, because the program im using isnt allowing it. Anyways, this is what I have for you.
CAUTION: Refer to Battery Disconnect Caution in Service Precautions.
Disconnect the negative battery cable.
Remove the engine oil pan. Refer to Oil Pan Replacement.
Remove the balance shaft chain cover. Refer to Balance Shaft and Housing Replacement.
Remove the balance shaft chain tensioner bolt.
Remove the balance shaft chain tensioner.
Install the balance shaft chain tensioner.
IMPORTANT: A brass feeler gauge needs to be used in order to ensure correct measurements are obtained. If a steel gauge is used, it well not bend in order to conform to the guide and it will allow for incorrect measurements.
Adjust the balance shaft drive chain tension by inserting a 1 mm (0.040 inch) brass feeler gauge between the chain guide and the chain. Press the guide against the chain using about three pounds of force.
Tighten the chain tensioner fastener.
Tighten the bolts to 13 Nm (115 inch lbs.).
NOTICE: Refer to Fastener Notice in Service Precautions.
Install the balance shaft chain cover. Refer to Balance Shaft and Housing Replacement.
Install the balance shaft chain cover nut and bolt.
Tighten the nut and bolt to 13 Nm (115 inch lbs.).
Install the oil pan gasket.
Install the oil pan.
Connect the negative battery cable.
Saturday, September 25th, 2010 AT 8:15 PM