Quote:
Originally Posted by Andrew164
My 164 does occasionally suffer from knocking though using 99 octane fuel and octane boosting additive does alleciate but not remove entirely. I do remember reading on a thread here that using a spark plug which burns cooler can help, can anyone advise
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Is that the 164 E ? It could be the distributor too , wrong one , or worn , best check the advance curve … unleaded is pretty good these days although pinking could be a problem when it was introduced in the mid 1980's .