1979 Mazda B2000 BaseFACTORY OEM SERVICE PROCEDURE

Reed Valve Air Injection: Description

NOTE: For 1974-78 models, see AIR INJECTION SYSTEMS article in this section. The 1979 California B2000 and automatic transmission equipped GLC, use an air pump type air injection system. See MAZDA AIR PUMP AIR INJECTION SYSTEM article in this section.

This air injection system uses a reed valve which allows fresh air into exhaust manifold according to exhaust system pulsations. System consists of reed valve(s), air silencer, and connecting hoses and pipes. SeeΒ Figure. A three-way catalytic converter is used to control HC, CO, and NOx exhaust emissions.

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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