How to Install a Spark Plug Seal
Is your spark plug well accumulating a small amount of oil due to a recent plug change? If so, you need to change your spark plug seal as well. It may not be leaking a lot of oil enough to submerge the wire connections, but if you let it stay that way for too long, your plug wires might misfire-giving you more problems than necessary. Below are instructions in installing a spark plug seal.
Tools you need:
- Torque wrench
- Seal pick/ remover
- Block of wood
Difficulty level: Moderate
Step 1: Unbolt the ignition coil. If it won't budge, let a penetrating oil sit in for a while before trying to unfasten it again.
Step 2: Disconnect the two PCV system hoses and unbolt the valve cover.
Step 3: Loosen the bolts of the rocker arm assembly one at a time, taking great care that you do not remove the rocker assembly bolts entirely. The assembly must remain in the exact same order as they were pulled away from the car.
Step 4: Reseat the spark plug tubes by driving it with a block of wood, squarely into the cylinder head.
Step 5: Pry the old seal out from its hole. Clean the sealing hole and press the new rubber seal in.
Step 6: Reposition the rocker arm assembly on the cylinder head. Do all the above steps in reverse to finish the project.
- Like the rocker arm assembly, it is important to reinstall the spark plug wires in the same order when you took them out.
- You must reseat the spark plug tube into the cylinder head because your new seal's size might constrict the flow inside if the gap of the components is too narrow.
- Always use great care in fastening and unfastening bolts. Most of the appending components under the hood are plastic-you might damage parts by over-tightening the bolts.