2005 Buick LeSabre Exhaust Manifold

You should place a new exhaust manifold gasket over the cylinder head studs, position the left exhaust manifold to the exhaust crossover and up to the left cylinder head, install the left exhaust manifold fasteners, install the two bolts attaching the exhaust crossover to the left exhaust manifold, position the left engine lift bracket to the engine, install the left engine lift bracket retaining fasteners, install the oil level indicator and tube and connect the spark plug wires to the spark plugs.

You should disconnect the spark plug wires from the spark plugs, remove the oil level indicator and tube, the left engine lift bracket retaining fasteners, the left engine lift bracket, remove the two bolts attaching the exhaust crossover to the left exhaust manifold, and remove the left exhaust manifold retaining fasteners and remove the left exhaust manifold and the gasket from the engine and clean and inspect the left exhaust manifold.

You should use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread-locking compound or sealant are identified in the service procedure. You can not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. You should use the correct tightening sequence and specifications when installing fasteners to avoid damage to parts and systems.

To avoid being burned, you can not service the exhaust system while it is still hot and you should service the system when it is cool. You should always wear protective goggles and gloves when removing exhaust parts as falling rust and sharp edges from worn exhaust components could result in serious personal injury.

The recommended torque is 30 Nm (22 lb-ft).