1982 Mazda RX-7 GSL, Automatic TransFACTORY OEM SERVICE PROCEDURE

Engine Compression

Start and run engine until it reaches normal operating temperature. Disconnect all spark plug wires and remove 1 spark plug from each chamber. Check compression of each chamber with engine at cranking speed (250 RPM).

COMPRESSION SPECIFICATIONS

Min. Compression Pressure 86 psi (6.0 kg/cm2 )
Max. Variation 21 psi (1.5 kg/cm2 )
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.