Genuine Chevrolet Tracker Intake Manifold

Chevrolet Tracker Intake Manifold Parts Questions & Experts Answers

• Manifold,Intake (On Esn)
  91176127
  Q: How do you remove the intake manifold in SOHC engine?

  A: If you are planning to remove it anyways, you can take them off before taking out the manifold, but otherwise, you may just leave throttle body and plenum assembly on. First unplug the negative battery terminal and then release fuel injection system. When necessary, drain the cooling system and remove either the air cleaner (for carbureted models), air intake case (for throttle body fuel-injected models), or disconnect air intake pipe (for multi-port fuel-injected models). Label them before detaching any of the hoses, wires, brackets, and emission lines connecting them to the carburetor/throttle body and intake manifold. Close off fuel lines and cap fittings to prevent leakage. For carbureted models this means disconnecting at the carburetor; for throttle body fuel-injected models this means disconnecting at the throttle body assembly; for multi-port fuel injected models consider raising vehicle and supporting on jackstands for easier access. Use a backup wrench while detaching an MFI fuel feed line. However, detach also from carburetor/throttle body any throttle cables and cable going from carburetor/throttle body to transmission (for automatics only) along with cruise control cable if applicable. On multi-port fuel-injected models remove three brackets that secure intake manifold/intake plenum assembly to engine block. Unscrew bolts/nuts holding intake manifold to engine using socket, ratchet and extension. If it sticks a little bit gentle hit it with soft-face hammer without prying against or tapping on carburetor/throttle body. Note clamp locations below bolts/nuts if there are any. After removal make sure that both surfaces have been cleared of all old gasketing material including aluminum areas which should not be scratched or gouged during cleaning process. Gasket removal solvents may be used if necessary. Install new gasket onto manifold tighten bolts/nuts progressively torquing from center outwards. Finally, reassemble other parts in reverse order, add coolant, start the engine and test it for leakage as well as proper operation.
• Collector,Intake (On Esn)
  91176133
  Q: How to remove the intake manifold in DOHC engine?

  A: The intake manifold removal procedure begins by relieving the fuel injection system pressure first and later disconnecting the negative battery cable. Also, drain the cooling system and remove the air intake duct between the air cleaner housing and the throttle body. Each electrical connection should be labelled prior to disconnecting it carefully as such include those for Exhaust Gas Recirculation (EGR) valve connector, Idle Air Control (IAC) valve connector, Throttle Position (TP) sensor connector, Evaporative Emissions (EVAP) canister purge valve connector, ground terminal on the intake manifold, Manifold Differential Pressure (MDP)/Manifold Absolute Pressure (MAP) sensor connector. Some of these hoses include brake booster hose, PCV hose, fuel pressure regulator vacuum hose, canister purge hose, vacuum hose, coolant hoses and breather hose from throttle body. Disconnect throttle cable, and if equipped with automatic transmissions, disconnect throttle valve cable too. The throttle body must be removed along with fuel rail and fuel injectors in case you want to replace intake manifold. Do not forget to take off two intake manifold stiffener plates as well as detach coolant pipe from the intake manifold next. Furthermore there is a need to remove mounting bolts and nuts for intake manifold before carefully taking it out of engine by avoiding prying it apart between gasket sealing surfaces or tapping on their throttle bodies under no circumstances. Then completely clean mating surfaces and install the manifold together with a new gasket-tighten bolts and nuts slowly in a crisscross pattern. Finally install remaining components back in reverse order; add coolant; run engine; check for leaks or problems.