Hot-cold plugs NGK-7 or 9?
Hot-cold plugs NGK-7 or 9?
I've been having a problem with low idle on my 91 TII and I heard about running BUR9EQ plugs all around. Has anyone else tried this?, does it help when starting?,also does NGK make a BUR9EQ lead plug, or do you just install BUR9EQ trail plugs all around?. My mods include HKS intake, RB DP, FCD, and Maxspeed CATback.
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NGK specifically made the BUR7EQ(P) and BUR9EQ(P) spark plugs for the Mazda rotary engine.  All of them are marked "L" and "T", respectively.  Don't worry about the markings; just use the 9's in the leading holes.  They won't give you any performance benefit, but the sure do last significantly longer in the leading positions.
-Ted
-Ted
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From: Auckland, New Zealand
Originally posted by RETed
just use the 9's in the leading holes. They won't give you any performance benefit, but the sure do last significantly longer in the leading positions.
just use the 9's in the leading holes. They won't give you any performance benefit, but the sure do last significantly longer in the leading positions.
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HalifaxFD
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May 9, 2016 07:06 PM
