Genuine 2008 Cadillac CTS Exhaust Manifold

2008 Cadillac CTS Parts Questions & Experts Answers

• Q: How to remove and install a Exhaust Manifold in 2.8L,3.0L,3.6L V6 engine on 2008 Cadillac CTS?

  A: The catalytic converter cannot be unbolted unless the cable connecting the negative terminal of the battery is disconnected first followed by lifting of the car properly on jack stands. To the catalytic converter-to-manifold studs and nuts which may be rusty apply penetrating oil and remove the nuts holding the catalytic converter to the manifold. Remove the oxygen sensors electrical connectors and unhook the wiring harness clips from the engine and push the harness out of the working area. Start with the right side manifold where one needs to locate and then take off the engine coverings and the retaining bolts, the manifold outer heat shield also needs to be detached and the ground wire needs to be detached from the coolant pipe mounting bracket beneath the manifold. To reach the lower manifold bolts, push the coolant pipe downwards, and detach the nut of the bottom part of the coolant pipe, and uncover the mounting bolt, starting from the outer bolt and moving towards the inner ones. Remove the inner heat shields at the exhaust manifold after detaching the cylinder head and laying it aside. When working with the left side manifold, it is pertinent to follow the same steps that are provided for eliminating the mounting bolts and the separation of exhaust manifold. Before mounting, clean the manifold and inspect it for cracks and the condition of bolt threads should also be checked for rust and other deformities while the mating surfaces ought to be clean. Coat threads of the inner heat shield bolts with an anti-seize compound, position inner heat shields, bolts and gasket on the manifold and cover bolts with medium strength locking compound. Lower the manifold on the cylinder head and put the mounting bolts in place but do not over tighten them, instead tighten the central bolt and then tighten each end with a torque wrench. In the case of need of bending the exposed part of the exhaust manifold gasket up against the cylinder head, apply anti-seize to the heat shield outer bolt Threads, and then install heat shield bolts. To complete the exercise, reverse the removal process, after which engage the engine and inspect for exhaust leakages.