I've a few questions regarding spark plugs. Hope the experts here can assist me as i'm learning more on my car.
1. I look through my car's manual. Spark plug is stated: (NGK) FR7DTC. What does this mean?
2. The best spark plug is the iridium right? Cos I did some search as below:

http://www.spark-plugs.co.uk/pages/technic...spark_plugs.htm
3. I thought each car only uses 1 spark plug? How to know whether how many plugs my car has?
4. Does changing the spark plug to iridium improves FC/acceleration as claimed? I look through some old posts regarding people MODDING their rides, most of them put spark plug iridium.
5. What is the standard price of one (1) iridium spark plug? Which shop in KL/PJ can install ORIGINAL ones?
..might add questions if i think of any.
Thanks in advance!
Nov 5 2011, 08:45 PM, updated 15y ago
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