- Intake manifold gasket set
- Water pump gasket
- Valve job kit
- Engine degreaser
- Plastic scraper
- Wire brush
- WD-40
- Rags
- Hose with nozzle
Instructions:
Step 1 – Remove Intake Manifold and Water Pump:
- Disconnect the negative battery cable.
- Remove the air cleaner housing.
- Remove the carburetor or throttle body.
- Remove the upper intake manifold bolts.
- Remove the lower intake manifold bolts and separate the intake manifolds from the engine.
- Remove the water pump bolts and remove the water pump from the engine.
Step 2 – Clean the Intake Valves and Combustion Chamber
- Apply the degreaser to the valves and combustion chambers.
- Let it sit for several minutes.
- Use the plastic scraper and the wire brush to clean off the carbon and deposits.
- Wash off with water.
- Remove any excess water with rags.
Step 3 – Reinstall the Water Pump and Intake Manifold:
- Apply a thin coat of gasket sealer to the water pump gasket.
- Install the water pump and connect the water hoses.
- Apply a thin coat of gasket sealer to the intake manifold gasket and install the manifold.
- Connect the fuel and vacuum lines, then the throttle linkage.
- Reinstall the carburetor or throttle body and the air cleaner housing.
- Reconnect the negative battery cable.
Step 4 – Add WD-40 to the Cylinders:
- Remove all the spark plugs.
- Spray a small amount of WD-40 into each cylinder.
- Let the cylinders soak for several hours or overnight if possible.
Step 5 - Rotate the Engine:
- Reattach the spark plugs and plug wires.
- Turn the engine over by hand (using the crankshaft pulley bolt). Several rotations will help to work the WD-40 around.
- Make sure the engine turns freely.
Step 6 - Start and Run the Engine:
- Try to start the engine.
- Let it run for a few minutes. If the engine runs roughly, continue letting it run at a higher idle speed.
- Turn off the engine and let it cool down.
- You can also put a bottle of valve cleaning agent in the gas tank and/or add a fuel injector cleaner to the gas.
Tips:
- Ensure you get all of the carbon and debris out of the intake valves and the combustion chambers.
- If the valves are stuck, or if the engine still runs rough after following the above steps, you may need to have a mechanic inspect the engine for further problems.
- A chemical valve cleaning product can also be used to help free up sticking valves.
