1, Wash new auto parts in solvent before installation.

The camshaft and valve gear components should be washed in solvent, to remove grease and dust accumulated during transport, to ensure a clean installation. Dry the parts thoroughly before installation, laying them out on paper towels or shop rags.

• Don't soak hydraulic lifters, which will be compromised by cleaning solvents.

• Before installing your new camshaft, make sure to check the part numbers of the camshaft and valve gear components against the manual, to avoid any mismatch of equipment due to a shipping error or a mistake at the shop.

2,Lubricate the cam.

Cam lobes and bearings need to be coated with oil conditioner, which is usually included with new part kits. Rotate the cam while it's in the block, applying the oil in small amounts. Be careful to avoid scratching the cam bearings.

• Move the cam as far back as the plug at the rear of the block will allow, and fasten the upper timing gear.

3,Set the timing chain.

The timing chain and sprocket can be assembled after you've lubricated the parts. To align the timing, you need to set the timing gear to Top Dead Center (TDC) and torque the assembly to the proper specifications, which will differ, depending on the brand of the component.

• Most gears will be marked with a notch or a green dot to help set TDC. Rotate the gear until the mark is at roughly 12 o'clock. Always defer to the manufacturer's directions.

• With the camshaft in place, the upper timing gear should have its timing dot in the 6 o'clock position; the lower timing gear should show its zero-degree marking in the 12 o'clock position. Checking this will ensure proper valve train movement and allow the engine to respond the way the camshaft is intended to.

4,Position the lower portion of the timing cover over the oil pan.

Make sure oil does not leak from the front of the engine. Apply silicone between the oil pan and timing-cover seal contact points, then tighten the oil pan back into place.

• If the gasket is undamaged, it can be cleaned before spreading a thin layer of silicone between the pan and the block.

5,Lubricate and install the lifters.

Always use a new set of lifters, checking each to make sure it can move unimpeded after you assemble it. If it doesn't, the cam and lifter will be distributed incorrectly, which can result in engine failure.

• Lubricate each of the the new lifters, dropping them into their place. Install the pushrods through the cylinder heads, install the rocker arms, and put the pushrods against the rocker cups.

6,Reassemble and reinstall the rest of the assembly.

Reinstall the water pump and reconnect both heater hoses. Compress the belt tensioner and replace the drive belt.. Reinstall the radiator and refasten all of those hoses, reconnecting the tubes in the fill neck.

• Secure the wiring harness to the fan shroud and replace the radiator tray and the MAF assembly. Refill the radiator with a 50/50 mix of coolant and water. Inspect the engine for any loose connections and then reconnect the battery cables.

7,Test the timing and adjust if necessary.

Turn the ignition and let the engine run, without starting, for a few seconds. Reconnect the coil pack harness if there are no problems.

• You may need to adjust the timing, using a timing gun, if you want to optimize the cam function.

8,Start the car to verify that the oil pressure is stable.

Let the car idle, pressing the gas pump if it threatens to stall. When the engine is running at full temperature, replace the radiator cap.

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