Metal cased design
You may need to take off the air cleaner (See Air filter change ), which may also have pipe connections.
- The efficiency and longevity of a spark plug motor largely depend on the quality and condition of the spark plugs. They need to be clean, properly gapped, and firing consistently to ensure optimal performance. Regular maintenance, including replacing worn or dirty spark plugs, can significantly enhance fuel economy and reduce emissions.


Double metal cased
Advantages:
– Good static sealing
– Compensation of different thermal expansion
– Reduced risk of fretting corrosion
– Effective protection against air side contaminants
– Higher bore surface roughness is allowed
– Installation in split-housings
– Modern lip design provides low radial forces
Table 3: Features of each seal type
Significance of Valve Cover Gaskets and Head Gaskets
• Super helix seal
The basic principle of sealing is straightforward – the flexible lip is held against the rotating part (usually the shaft) whilst the casing (or O.D.) is pressed into the housing or bore and holds the seal in place. The sealing lip needs some form of lubrication to avoid overheating and is usually energized by means of a garter spring.
Rotary Wheel Of Auto Parts
