Home Tips & Tricks 1983 Mazda RX-7 GSL TESTING ENGINE COMPRESSION

1983 Mazda RX-7 GSL TESTING ENGINE COMPRESSION

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Download The manufacturer recommends using a special compression tester (49 0820 280K). Compression testers for piston engines will read only the highest pressure of the 3 combustion chambers in the rotor housing. HIGH TENSION WIRE RESISTANCE Carefully remove high tension wires from spark plugs and distributor cap. Using an ohmmeter, measure resistance of wires while gently twisting wires. If resistance is not to specifications, or fluctuates from infinity to any value, replace high tension wire(s). HIGH TENSION WIRE RESISTANCE