Good morning . Just tuned in. 70 retired diyer. 2006 Subaru sti po302 troubleshooting. Done spark plug and ignition pck swap. Already did compression and leakdown. Within specs. Next fuel injector testing and cleaning. Car runs great, all stock with spt add ons. Big pita compared to my Toyota and Honda vehicles
Brand new NGK plugs have a squash washer. Hand tighten to firm, then ½ turn with wrench. This instruction is on the box. Only do this with new plugs. Use torque wrench If refitting old plugs.
