Wednesday, 26 March 2008

and while I'm on the subject of Spark Plugs !

One of the leading causes of hard starting is fouled or worn spark plugs. When a fuel injected engine that normally starts quite easily has to be coaxed to life, it often means the plugs are overdue for a change. As the electrodes wear, the voltage required to jump the gap and ignite the fuel mixture goes up. At the same time, accumulated deposits on the insulator can drain off voltage before it even has a chance to form a spark. So the engine fails to start or starts only reluctantly after prolonged cranking.
Spark plug sales take off when cold weather arrives is because many motorists put off changing the plugs until they absolutely have to. The vehicle manufacturer's recommendations to change the plugs every 30,000 miles for preventative maintenance are ignored, so the plugs continue to rack up mile after mile until they've deteriorated to the point where they're causing noticeable driveability problems.
Emission checks will catch a lot of bad plugs and force motorists to change plugs that need to be replaced. But in areas where emission checks are not required, the only incentives for changing the plugs are the driveability problems created by the plugs themselves. So many motorists today think they're saving money on maintenance by putting off a plug change until it's obvious the engine needs new plugs. Then and only then will they begrudgingly spend any money on a new set of plugs.
What motorists need to be told today is why the plugs should be replaced according to their vehicle manufacturer's scheduled maintenance recommendations be it every 30,000 miles, or 60,000 to 100,000 miles in the case of long life plugs. So why not visit the Auto tap website for three good reasons why the plugs need to be changed: ( cos I don't wanna copyright infringe by pasting them here - sorry)