Question 1

How to remove and install the intake manifold in V8 engine on Chevrolet Trailblazer?

Accepted Answer

Before you can take off the intake manifold, you definitely know that you need to detach the cable to the negative terminal of the battery and pinch off the coolant hoses to the throttle body if there is any. After that, unbolt the air filter housing and, for the 6.0L models-the intake manifold cover, and then release the fuel system pressure. Remove the accelerator coupling and if necessary the cable for the operation of the cruise control. Remove the electrical connectors from the fuel injectors, EGR valve, EVAP solenoid, MAP sensor and sensors on the throttle body and then mark them for reconnection. Remove the large wiring harness bracket from the intake and put aside it. Take out the fuel rails and injectors in a single unit if you can, just to be on the safe side, as removing the intake manifold may damage the fuel injectors which should not happen since it is not absolutely necessary to do step b. Remove vacuum hoses concerning the intake manifold or throttle body, including the power brake booster, PCV, as well as the EVAP purge control solenoid, and the coolant hoses bonded to the throttle body. Unbolt EGR valve and pipe, if still connected; disconnect any other connections to the EGR valve; 3/8 inch sockets to loosen the intake manifold bolts gradually in backward direction to a degree that they can be unbolted by hands. If the manifold is jammed then it can be prised open with a view to damaging the gasket sealing faces and this can be done using a pry bar. Remove the heads and block, and the mating surfaces must be clean, and no residues of the old gaskets should remain; however, avoid the use of sharp tools when scraping. This shall be followed by cleaning with a cloth soaked into safety solvent and followed by vacuuming to clear debris. Re(thread) the bolt holes chase with a tap and on the same note blown compressed air to ensure that it is clean. Place the new gaskets under the intake manifold and ensure that the gasket has clicked to the manifold to firmly sit on the in take port holes. Place the manifold gently and sparingly coat the bottom threads of the bolts with medium strength lock mating compound, fit the bolts and torque them to the prescribed sequence and figure without exceeding the limit torque. The following installation steps are the reverse of the removal, and then check the coolant level, and start the engine to look for vacuum leak at the intake manifold gasket.

Question 2

How to remove the intake manifold in SOHC engine on Chevrolet Tracker?

Accepted Answer

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.

OEM Chevrolet Intake Manifold

220 Intake Manifolds found

Chevrolet Intake Manifold Part Number: 12587878

Chevrolet Intake Manifold, Passenger Side Part Number: 12643886

Chevrolet Intake Manifold Part Number: 12672109

Chevrolet Intake Manifold Part Number: 55509565

Chevrolet Intake Manifold Part Number: 12713777

Chevrolet Intake Manifold Part Number: 12715992

Chevrolet Intake Manifold Part Number: 25204837

Chevrolet Intake Manifold Part Number: 12639885

Chevrolet Intake Manifold Part Number: 55593173

Chevrolet Intake Manifold Part Number: 25202789

Chevrolet Intake Manifold, Lower Part Number: 12633349

Chevrolet Intake Manifold, Lower Part Number: 12611205

Chevrolet Intake Manifold Part Number: 12629346

Chevrolet Intake Manifold Part Number: 55598784

Chevrolet Intake Manifold Part Number: 12633365

Chevrolet Intake Manifold Part Number: 12665647

Chevrolet Intake Manifold Part Number: 12683666

Chevrolet Intake Manifold Part Number: 12677612

Chevrolet Manifold Part Number: 12648978

Chevrolet Intake Manifold Part Number: 24507208

Chevrolet Intake Manifold

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