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My car recommends also colder plugs for highway/hot climates. The insulator
on my 'normal' plugs changes colour to dark brown. That's after a month driving. Would a colder plug make the burn marks too? "TeGGeR®" > wrote in message ... > Abeness > wrote in news > >> What size socket do I need for the plugs on a 94 Civic EX (D16Z6 engine)? >> >> Also, I notice that the service manual notes two different plugs, one >> the NGK ZFR5J-11 for "normal" driving, the other the NGK ZFR6J-11 for >> "hot climates or continuous high-speed driving". My car is used mostly >> for trips, not a lot of local driving. Does primary driving at highway >> speeds warrant the 6J plug? > > > > If you're spending much of your time at or near 4,000 rpm, you'll need the > colder (6) plugs. Otherwise the insulator will overheat and blister. > > Pull the plugs that are in the car now. If the insulators have some color > to them (doesn't matter what color as that's a function of your gas), then > you're fine. If they are bright white with tiny bubbles on them, move up a > range. > > >> >> Is another brand recommended? I just discovered sparkplugs.com--pretty >> cool. Anyone bought from them? A listing of plugs for my engine: >> http://www.sparkplugs.com/results_ap...1&AAIA=1168747 >> None of these manufacturers means anything to me. It's unlikely that I >> need "premium" plugs--not a racer--but if the Champion Premium Gold plug >> is any better than the NGK OEM spec, the price is certainly right. > > > There are anecdotal reports of poor operation with anything other than NGK > or ND plugs, the OEM spec. > > Personally, I've had unsatisfactory results with the "Splitfires". I don't > know if this was just my perception or if the car really did run worse, > but > I didn't like them. > > Champion and Autolite are domestic manufacturers. GM and Ford use them. > > >> >> Since the last tune-up on this car was at 97K miles at an unknown date >> (now at 118K), and since I don;t know whether the plugs were replaced >> then, I'm thinking it might be a good idea to replace them soon. >> > > > Never a bad idea, that's for sure. You may find little wear on your > existing plugs if they're platinums or if the car's spent much of its time > at city speeds. > > -- > TeGGeR® > > The Unofficial Honda/Acura FAQ > www.tegger.com/hondafaq/ |
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