Replacing the intake manifold gasket on the 04 Corolla. The Haynes manual says torque to 22 ft lbs. Online I find 14 ft lbs. The block is aluminum so 22 seems high for a bolt, seeing as the spark plugs are 14 ft lbs. Any one know for sure. I compromised and tightened them to 17 ft lbs. No more PO171 code anyway.