Gsf 400 bandit spark plugs issue
hi everybody, i am new to this forum. i would like some technical help if possible regarding the spark plug types that fit in a Suzuki Bandit 400 93' model.
1) how do i distinguish what type of spark plug fits for my bike ? by what paramter ? (size ? make ? )
2) my previous mechanic used iridium spark plugs which felt like a lot of improvement comparing with my previous ones. i had to change mechanic and the new one says that this type of bike cant have iridium spark plugs fitted !!! which one is wrong and why ?
after search ont he internet i found ads about ngk 4218 spark plugs. they were advertized for bandit 400 too. i am confused as to what to do with my new mechanic. shall i accept his opinion and pay him for the service or i shall demand that he changes my spark plugs to the previous which were fine ?
thanks for your time
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