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Are ' fancy ' plugs good ?

Question : What are the advantages of using those 'fancy' plugs such as platinum, iridium, four ground electrodes (super four) etc.?

Answer : All these specialised plugs are manufactured for special purposes such as competition, and unless the engine is highly tuned or has special needs, there is no need to use anything other than what is recommended by the manufacturer. Having said that, you sometimes may want to move a step up or down in the heat range of that particular model of plug to suit your driving or usage condi- tions. Of course four electrodes are better than one, but if one can fire the mixture efficiently, why do you need to spend more on a four-electrode plug?

 
   
 

Sooty spark plugs

Judging the air-fuel ratio

Spark plugs covered with oil

Are 'fancy' plugs good ?

Spark plug won't last

Misfiring spark plugs

Spark plugs poser

Soiled plugs, tired engine

Wrong spark plugs

 

Sump repairs won't last

Not too hot, not too cold

Get the spark right

Glow and new glory

Window into the ( car's ) soul

Clogged plugs

Plug cables

Up in smoke

 

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