Genuine Dodge Nitro Intake Manifold

Dodge Nitro Intake Manifold Parts Questions & Experts Answers

• Engine Intake Manifold
  53034181AB
  Q: How to remove and install the lower intake manifold in 4.0L V6 engine on Dodge Nitro?

  A:

  To accomplish the removal of the lower intake manifold, the fuel system pressure must be released and the cable of the negative terminal of the battery disconnected. If equipped, remove the engine cover and, if necessary, drain the cooling system. Third, remove the electrical connectors from the electronic throttle body's, IAT sensor, the MAP sensor, and unbend the clamp then remove the hose connecting the throttle body and air-filter housing. Remove the PCV valve hose from the intake manifold, EVAP purge solenoid line, power brake booster connector hoses and the EGR hose. To gain access the wiring harness relocate it by removing the retainers from intake support brackets next remove the bolts for intake manifold support brackets and upper intake manifold bolts to raise the upper manifold off the lower. Seal the intake ports with covers in order to minimize and hinder the penetration of dust in the engine. Take off the upper radiator hose from the thermostat housing, further, remove the upper intake manifold. Remove the electrical connectors from fuel injector, coolant temperature sensor, and knock sensor; and remove the heater hose from the intake manifold, and the coolant overflow hose from the thermostat housing. Turn the fuel line off, and then take off the fuel rail combined with the injectors. Last, take out the lower intake manifold bolts and followed by the elimination of the lower intake manifold. For installation, it is necessary to have clean surfaces of the mating of the Cylinder Heads, cylinder block as well as the intake manifold using gasket removal solvents where necessary. Old gasket material has to be scraped off with a gasket scraper and the flange surfaces clean with lacquer thinner or acetone with no residues being left in the intake ports. Deposit a 1/4 inch bead of RTV sealant on the surfaces of the cylinder head that is going to be in contact with the engine block, place the lower intake gaskets in the right positions and lower down the lower intake manifold gently and then tightening the bolts of the manifold with your fingers and subsequently using the prescribed torque. The supply and exhaust hoses and harnesses can then be reconnected in the reverse of this sequence, fitting of a new upper-manifold gasket, the upper intake manifold to the lower intake manifold, then the bolts for the upper intake manifold can be tightened in a star pattern to the torque specification. Perform the final stages of installation of the remaining parts in the reverse order and if the cooling system was opened it has to be refilled, then just turn on the engine to detect any possible leaks or improper work.