Pontiac 12597953 Manifold, Intake

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To get to the upper intake manifold you must first turn the engine off and release the fuel system pressure and disconnect the negative terminal of the battery. Subsequently, require the removal of the engine top cover, as well as the outlet tube, which is located in the air filter housing. Pry at the fuel supply tube and move it away, also unclamp and detach the small coolant air bleed hose from the intake manifold and the coolant of the outlet and then cap the hose and fitting so that it does not spew out coolant. Take off the brake booster vacuum line and also the wiring of the MAP sensor, throttle body, intake manifold tuning valve, and EVAP canister purge solenoid. Also, remove the PCV tube and the quick-connect fitting at the tube to the EVAP canister purge solenoid and make this tube away. To which they replied: 'The fuel rail should be unbolted from its end support bracket, the bolt should be removed from the fuel rail wiring harness connector, and the fuel rail wiring harness should be pulled away from the intake manifold.' There are six mounting bolts on the top of the upper intake manifold with the heads on the upper side; unbolt these and lift out the upper intake manifold out of the lower. Lower intake manifold removal: initiated after the removal of the fuel rail obviously followed by the removal of fuel injectors next is to unscrew the lower intake manifold mounting bolts and then the manifold can be lifted. When installing it is essential that sealing surfaces of the intake manifold and cylinder heads should be clean. All remnants of the old gasket should be taken out, then degrease the mating surfaces with a cloth that has solvent, and vacuum Dirt that may fall into the intake ports. Clean the threads in the bolt holes with a tap of appropriate size and blow compressed to clean up the debris. New gaskets must be placed at the cylinder heads and also correctly positioned before the lower intake manifold is put in place, all mounting bolts must be equally tightened to the recommended torque setting. Remove the fuel injectors and the fuel rail and fit new gaskets on the top of the lower intake manifold, fit new upper intake manifold and tighten the bolts in sequence to the torque setting. Last but not least, follow the procedure in reverse and observe the coolant level and put as needed.

To remove the intake manifold, you should remove the intake manifold mounting bolts and nuts, then lift the manifold from the engine compartment.

Yes, for the 2.0L HHR engine, you should also disconnect the negative battery terminal, remove the air filter housing and charge air cooler pipe, and disconnect electrical connectors and wiring harnesses. Detach vacuum hoses, including the brake booster hose, and mark them. Remove the charge air bypass valve solenoid, relieve fuel system pressure, and detach the fuel feed line from the high-pressure fuel pump. Remove the charge air bypass vacuum tank, intake manifold brace, refrigerant line bolt, and high-pressure fuel pump bracket bolt. Then, remove the intake manifold mounting fasteners and detach the manifold from the cylinder head.

Remove the engine cover by lifting up on the upper left and right corners and separating it from the engine.

Proceed to remove the fuel rail, disconnect the brake booster vacuum hose, and any other vacuum hoses from the intake manifold, marking each hose with tape for correct reassembly.