Remove the exhaust manifold
Remove two heat deflector plates from manifold.
Remove manifold from studs.
Turn manifold 90° to the right and lift up.
Check gasket face to cylinder head
CAUTION:
Applies to cars with air conditioning (A/C): Do not
damage the pressure switch (Pressostat) on the air conditioning (A/C) pipe.
NOTE:
Studs should always be secured with strong thread seal, P/N 1161076-5, when installed.