The intake manifold in your Chevy Astro machine distributes the fuel/air mix to the cylinder heads. Replacing one is normally a engagement boss left to professionals, as is the event with most modern-day engine components. One of the most essential matters to conjure up is how all the parts connect to the manifold.
Instructions
Removing the Old Manifold
1. Disconnect the automobile's refusal battery cable. Remove the engine comprehend. Push the front seats back, remove the engine panel's lower extent, disengage any benefit rods and floor ducting, loosen the retaining screws and unlock the backside latches. Disconnect the VC valve and hose from the manifold.
2. Withdraw the cooling method. District a container under the void plug at the radiator, and remove the plug to filter the coolant from the radiator. Repeat with the alike container under the coolant bleed plug at the engine block.
3. Detach the fuel lines, vacuum lines and wire leads from the fuel injection meeting. Plug the fuel lines with rubber so the fuel won't influence contaminated. Disconnect the fuel injection throttle linkage, cruise driver's seat and TV linkage, and all other vacuum lines and wires connected to manifold components. Scrape the senescent gasket info off the mating surface.
Installing the New Manifold
6.Unbolt the alternator and its bracket, and fix it away of the expedient.
5. Remove the manifold's mounting bolts and seperate it from the cylinder sense. Don't pry the manifold off the intellect, or you may damage the sealing surface. Compose trustworthy you appreciate how and where everything is reconnected.4. Remove the ignition coil from the engine by unplugging its wire and electrical leads and removing its mounting nuts.
Remove all components that are yet attached to the decrepit manifold, and connect them to the au courant one.
7. Disinfected the cylinder head with lacquer thinner or acetone. Arrange the corresponding to the fresh manifold's gasket surface provided needed.
8. Exercise a thin coat of RTV sealant to the mating surfaces of both the manifold and the cylinder tendency. Don't use too much sealant; make sure it won't go into the air or coolant passages after installation. Place a new gasket on the manifold.
9. Hold the manifold against the cylinder head, and install the bolts by hand. Tighten the bolts with the wrench in a specific order: Start with the two bolts on the top edge, then the two on the bottom corners, followed by the one on the top left corner and the two middle bolts at the bottom.
10. Reinstall all parts and components in reverse order of removal. Refill the radiator; use fresh engine coolant if the old coolant is contaminated in any way.
