1972 Mazda R100 Automatic TransFACTORY OEM SERVICE PROCEDURE

Air Supply Valve

Remove air hose from air suction pipe of the air supply valve. Start engine and run at idle speed. Close air suction pipe of the air supply valve. The engine speed will drop, but it should not drop over 30 RPM. Disconnect wire to the air supply valve solenoid and check the air supply to the intake manifold. A large amount of air should be supplied with the wire disconnected.

Factory Service Tools

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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.

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