NGK Spark Plugs

The proper functioning of a motor requires three things:

• The mixture of air and fuel must be in the correct ratio and uniform;
• Proper compression;
• A good spark.

 

 

Even when you supply the motor with a correct mixture of air and fuel and create good compression, the engine does not function if it will not have a good production of sparks. The spark plug is a very important element in the production of good spark. The purpose of this guide is to offer technical information on spark plugs and instructions on how to use them, presented in a simple format of Questions and Answers.

 

25 QUESTIONS AND ANSWERS ON SPARK PLUGS


P1.
What is the function of a spark plug?

P2. Why are NGK spark plugs superior?

P3. What is the heat rating of a spark plug?

P4. What do NGK part numbers signify?

P5. What is the best way to select the correct spark plug?

P6. Why is the firing end appearance of a spark plug important?

P7. What is the function of the corrugations on the insulator?

P8. What is a resistor spark plug?

P9. What is a Green type spark plug and how identifies it?

P10. What is flash over?

P11. What is a racing spark plug?

P12. What is a surface discharge spark plug?

P13. What are the features of special type spark plugs?

P14. What is spark plug carbonization?

P15. What is spark plug overheating?

P16. What is spark plug that must be used in a conversion of gasoline to alcohol fuel?

P17. Is a stain between the insulator and the metal shell caused by gas leakage ?

P18. What precautions should be taken during installation of spark plugs?

P19. What spark plug must be used in a CNG conversion?

P20. How long will a spark plug last?

P21. When installing a compressing turbo must I substitute the original spark plug?

P22. When increasing the compression tax must I substitute the original spark plug?

P23. Can I substitute the spark plug of an electrode for multiple spark plug electrodes?

P24. Which the advantage in using Iridium spark plug?

P25. Must I diminish the recess of the electrodes in cars converted for CNG?