How to Replace a Camshaft Synchronizer

Your truck’s camshaft synchronizer sets the right timing to fire the spark plugs and ignite the engine. Normally, the camshaft synchronizer can last until the engine wears down but from time to time, it may malfunction and need to be replaced. To replace your car's camshaft synchronizer, follow these steps.

Step 1 – Get the Area Ready

Park your car in a safe position then turn off the engine of your car and let it cool down before you start doing repairs. Once the engine has cooled off, open the hood of your car, locate the battery and disconnect all battery terminals.

Step 2 – Remove the Air Intake

Uninstall the air intake tube and the air filter then take out the upper intake manifold.

Step 3 – Set Crank Shaft at Top Dead Center

Turn the crank shaft using a 19mm socket with a short extension from underneath the truck. Find the crankshaft pulley and the timing mark (two digits) on it, as well as the pointer at the front side of the engine. Adjust the crank shaft so the hash mark is pointing at the first digit of the two numbers found on the markings. For example, with markings 1 1 and 1 0, the number “1” is the correct position.

Step 4 – Remove the Camshaft Sensor

Take note which way the camshaft sensor points to – this should be carefully noted to ensure the correct orientation when the new one is installed. Squeeze the camshaft sensor connector from beneath and pull. Remove the screws and the camshaft sensor by pulling it straight up.

Step 5 – Remove the Existing Synchronizer

Check the metal finger on top of the synchronizer (the actuator). Its gap must be near the top of the synchronizer. If the actuator is at the opposite gap, adjust the crank and make sure that the crankshaft pointer and pulley marks are aligned. Remove the bolt of synchronizer clamp using a 10mm socket. Mark the synchronizer and engine block for alignment reference. Pull out the synchronizer (which rotates) at an angle to clear it from the lower intake manifold. When inserting the new one later, it should go on in the opposite direction while aligning the marks. Warning: the oil pump drive must not be disconnected, if it does you will hear a metallic sound while pulling up the synchronizer. If so, stop and retrieve it from the oil pan and put it back in place then continue with pulling out of the synchronizer.

Step 6 – Install the New Synchronizer

Install the new one – precisely marking it exactly where the original synchronizer is marked. Check if the actuator is centered at the gap; repeat if not aligned. Re-seat the hold down clamp and bolt it. Use a torque spanner to set it in place. Re-install the other remaining parts.

Step 7 – Test the Car

Once you are done, get inside your car, start the engine and then take your car around the block to test its' performance.