Genuine Lincoln Town Car Exhaust Manifold

Lincoln Town Car Exhaust Manifold Parts Questions & Experts Answers

• Exhaust Manifold Assembly
  F4AZ-9430-B
  Q: How to remove and reinstall an exhaust manifold on Lincoln Town Car Overhead cam (OHC) engine?

  A: Disconnect the cable from the negative battery terminal. Raise the vehicle and support it securely on jackstands. Working under the vehicle, apply penetrating oil to the exhaust pipe-to-manifold studs and nuts as they're usually corroded or rusty. Remove the nuts holding the exhaust pipe(s) to the manifold(s). On the right side exhaust manifold, disconnect the EGR pipe and remove the two manifold-to-exhaust pipe nuts. On the left side, only the two exhaust manifold-to-exhaust pipe nuts need to be removed. In extreme cases, you may have to heat them with a propane or acetylene torch in order to loosen them. Disconnect the EGR tube connector from the right side manifold. Remove the through bolts for the Engine Mounts. Slowly raise the engine with a floor jack, using a piece of wood between the jack and the oil pan, until the fan just touches the fan shroud. Be careful that nothing is being pulled or stretched too tightly. Remove the left side engine mount from the block, if necessary, to get to all the manifold bolts. It isn't necessary to remove the right side engine mount. Remove the exhaust manifold(s)-to-Cylinder Head bolts and separate the manifold(s) from the cylinder head(s). Check the manifold for cracks and make sure the bolt threads are clean and undamaged. The manifold and cylinder head mating surfaces must be clean before the manifolds are reinstalled. Position the manifold on the head and install the mounting bolts. When tightening the mounting bolts, work from the center to the ends and be sure to use a torque wrench. Tighten the bolts in three equal steps to the torque. The remaining installation steps are the reverse of removal. Start the engine and check for exhaust leaks.
• Exhaust Manifold Assembly
  F5AZ-9430-A
  Q: How to remove and reinstall an exhaust manifold on Lincoln Town Car Overhead valve (OHV)engines?

  A: Disconnect the battery cable from the negative terminal of the battery. Raise the vehicle and support it securely on jackstands. Working under the vehicle, apply penetrating oil to the exhaust pipe-to-manifold studs and nuts. Remove the nuts that hold the exhaust pipe flange to the exhaust manifold. Unplug the electrical connector for the oxygen sensor. Lower the vehicle and remove the spark plug heat shields, if equipped. First, remove the spark plug heat shield nuts and then remove the shield, and spark plugs. Remove the manifold heat shields, if equipped. On some models, it is necessary to remove the heat shield nuts and the heat shield to gain access to the exhaust manifold bolts - use penetrating oil to make the fasteners easier to remove. Remove the air cleaner assembly and heat stove tube, if equipped. For the right side manifold, remove the Thermactor hardware, if equipped. Remove the automatic transmission fluid dipstick tube, if necessary. For the left side manifold, if it's in the way, remove the engine oil dipstick and tube. For both manifolds, bend back the locking tabs. Some models are equipped with manifold bolt locking tabs -bend these down before removing the bolts - use new locking assemblies on installation, bending the tabs up to lock the bolts in place, if equipped. Remove the mounting bolts and separate the manifold from the head. Use a deep socket to remove the special stud bolts used to retain the spark plug heat shield. Note the locations of the pilot bolts.Check the manifold for cracks and make sure the bolt threads are clean and undamaged. The manifold and cylinder head mating surfaces must be clean before the manifolds are reinstalled - use a gasket scraper to remove all carbon deposits and old gasket material. Position the manifold and gasket, if used, on the head and install the mounting bolts. When tightening the mounting bolts, work from the center to the ends and tighten the bolts in three equal steps. The remaining installation steps are the reverse of removal. Start the engine and check for exhaust leaks.