a standard spark plug should last 10-20K KM...those better/performance type should last 30-50KM....
Spark plug is wear and tear part...
Also life span of spark plug depend on your engine condition...if your engine makan engine oil / wrong tuning then your spark plug will wear out faster.
Need help here.
Is all about AYC again. sigh !
There is a "eek eek" sound coming out from behind left hand side (AYC pump located) whenever i press the break.