The mirage was missing and backfiring at the higher rpms. i changed plugs + gap, rotor cap and rotor, retarded the timing a hair, normalized tire pressure (42psi once a week its hardly ever any different but check it anyways ) and did a compression check. 181 193 182 181 wow! crazy. whats up with that? the plugs were destroyed after 10k miles. the cap points had a really nice wear edge from the rotor, plus there must have been a gasket leak since there was a little dirt in there. i also changed the oil and filter. started the puppy up, wow. its soooo quiet. it feels so much smoother now. now that the motors quiet, something else is louder. ive got some really loud tappet noise between 3-4.5k . im going to check my valve lash saturday after i pick up my new wheels. i set it last time i changed the plugs, and checked it 5k ago and it hasnt changed. opinions?