What to know about the Camshaft Seal:
Like the crankshaft, the camshaft is a vital component of the combustion process that moves your car down the road. Its motion is in charge of instigating valve movement, which regulates the air/fuel mixture that fuels the “big bang.” The camshaft uses lobes (called cams) to push against and open the valves as the camshaft spins (springs on the valves return them to their closed position) in sync with the pistons. Note: Both valves are closed during compression and combustion so that the combustion chamber is sealed.
The camshaft seal fits between the camshaft and the cylinder head, sealing the camshaft between the top of the head and the valve cover. Like all of an engine’s internal moving parts, the camshaft must be well oiled, fundamentally submerged in oil, to do its job properly. Without the camshaft seal, this lubricating oil would leak out of the engine block, befouling the engine bay and putting the engine’s internal parts in danger from inadequate lubrication. It also keeps contaminants like dust and dirt from damaging the engine’s internal parts.
Facts to Note:
Typically, camshaft seals do not need to be changed unless other parts, such as the camshaft, are being changed.
Change the timing belt when changing the camshaft seals, and vice versa.
A leak from the camshaft seal or valve cover gasket are hard to tell apart if the valve cover gasket is leaking in the same area as the cam seal.
How to Fix:
The battery is disconnected
The camshaft timing belt and gear is detached
The camshaft seal is changed
The timing gear and timing belt is reinstalled
The battery is reconnected and timing checked and vehicle checked for leaks.
One of the most vital parts of your car, the camshaft seal is made from a durable material, capable of withstanding extreme temperatures and pressures. But if it fails, replacement is the only cure. The good news is that the seal is a relatively inexpensive part, but note that changing it can be a labor-intensive job.
Common symptoms indicating you may need to change the Camshaft Seal:
Oil leaking from behind the timing cover.
The leak will eventually damage the car’s timing belt or cause it to slip, which will in turn throw the entire combustion process off kilter: the engine will run rough; there will be a noticeable loss of power, overheating issues, stalling and backfiring, excess smoke pouring out of the exhaust, and more.
Importance of this service:
READ ALSO:WHAT ARE THE FUNCTIONS OF A CAMSHAFT
Loss of oil could cause the engine to seize, and a leak could develop into a potential fire hazard as the mixes with dirt and other contaminants. Change the camshaft seal sooner than later.