haggis Posted May 7, 2016 Share Posted May 7, 2016 Alright so had the glanza a year and only jusy changed spark plugs ...The ones i pulled out are pretty charcole and car is running soooo much better now.How often should these be changed . I think the ones i pulled have been there for 20 years as they are black..Hopefully engine isnt super worn Quote Link to post Share on other sites
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