How to Replace an Intake Manifold Gasket


Below guide will teach you How to Replace an Intake Manifold Gasket. Please follow the instructions carefully.

Things You’ll Need:

  • Screwdriver
  • Cooling System Pressure Tester
  • Scraper
  • Socket and Ratchet Set
  • 3/8 in. Drive Ratchet
  • Coolant/Antifreeze
  • Intake Manifold Gasket

Estimated Costs:

  • DIY Costs: Est. $38.86 parts only
  • Shop Costs: Est. $388.90 parts and labor

Instructions:

  • Discard the negative battery cable from the battery terminal.
  • Place a drain pan under the radiator drain plug and unplug it to allow the coolant to drain out.
  • Take the air cleaner assembly out of the vehicle.
  • Take apart all the air cleaner hoses from the carburetor or throttle body.
  • Also, discard the vacuum lines from the exhaust gas recirculation (EGR) valve and the carburetor.
  • Next take the fuel lines, electrical connectors and distributor out from the intake manifold.
  • Take the upper radiator hose from the intake manifold and also discard the throttle linkage from the carburetor.
  • Unfasten the nuts holding the intake manifold to the stud bolts and take the intake manifold out of the vehicle along with carburetor.
  • Now, when the intake manifold is removed, examine the manifold and engine block carefully for any signs of wear and tear nearby the damaged gasket area.
  • Wipe off the mounting surfaces of the engine and manifold so that the dust, debris and remaining particles of the old gasket are removed.
  • Take a new gasket and position it properly on the mounting surface.
  • Now, apply a thick bead of RTV Silicone gasket sealer onto the rear and front lip of the engine block where the manifold mounting surface rests on the engine block.
  • You need to apply a thin layer of RTV sealant on the surrounding surface of the water passage on the engine block.
  • Now you are ready to position the intake manifold back onto the engine block. Do it carefully and secure the intake manifold to the engine block with bolts.
  • Reconnect all the vacuum lines, hoses, and other components back to the intake manifold.
  • Also, reconnect all the components such as fuel lines to the carburetor.
  • Add new coolant mixture to the radiator reservoir until it reaches to the MAX mark.
  • Turn the engine on and let it run for few minutes. Recheck the coolant level and add more coolant if required.
  • Recap the radiator.
  • Take a small drive and check for any leakage signs.

Tips & Warning

  • Don’t ever forget to use protective clothing while working with your vehicle. Use safety goggles, latex gloves, or closed toe shoes to prevent injuries.

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