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I just purchased some new Iridium NGK Spark plugs for my 1987 Alfa Romeo Spider, and I was wondering what the "gap" should be set at on the spark plugs... any help would be much appreciated.
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Be careful when you adjust the gaps of these plugs as they are relatively fragile. These plugs will fire reliably with wider gaps than standard plugs and I would suggest .030". I have run them at .055" in an oil burning motor to reduce fouling.
 
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