Originally Posted by rcmdesign
Worn out plugs will have buildup on the tip, but you need to use a feeler to space out the proper gap needed on the plug. This is very important and can increase your performance with the proper gap...
where can i get this "feeler" ? also, do i have to use a torque wrench or can i ratchet them in/out
1998 Saab 900s
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Dual XD-7500 head unit, GenuineSaab Sport Intake Pipe and 22mm Rear Sway Bar, Optima Redtop, 2 Rockford Fosgate P2 12\" Subs in Rockford sealed box, powered by a Rockford Punch 200aIV amp running off Rockford Fosgate 8 Gauge Wiring kit, 3 way Pioneer 6x9 rear speakers