Engine Tune-up Air Cleaner Element Inspection/ â€” Replacement Inspection 1. nemnve the air cleaner element. 2. Check me air cleaner element for fouling. NOTE: No cleaning is necessary for the alr cleaner element, because its filter rakes in 0i! 1: viscous type). Replace: every two years I The air cleaner element should be replaced more frequently on cars normally used under severe driving CDndiliOï¬‚S. Replacement 1, Remove the air cleaner cover AIR CLEANER COVER 2. Replace the element, install the air cleaner cover and tighten me clip. nut or halts securely. 7 Compression Pressure Inspection â€”â€” 1. Before Inspection, run me engine until it warms up (radiator fan comes .on). - 2. Disconnect spark plugs l4). 3. Disconnect the 24â€˜ connector (Ignition coil primary lead) from the distributor, Z-P CONNECTOR DISIRIBUTOR 4. Fit the compression gauge adapler into a plug hole. I Measure compression pressure at each cylinder. Cnmpmssian pressure: sonc Engine: 1,275 kPa (13.0 kg/em2. 135 psi) nr 250 minâ€œ lrrrm) DOHC Engine: 1 .324 kPa (13.5 kg/erna, 192 psi) u 250 min (rpm) Limix: 932 â€œâ€™3 (9.5 kg/crnz, 135 psi) u 250 rnin-= lrpm) Difference between cylinders: 169 m 12.0 kg/emZ. 23 psi] NOTE: Use a full charged battery. 5. If compression pressure is low, it is caused by wear or damage of piston rings or head gasket. and improper seated valves.