1981 Mazda B2000 BaseFACTORY OEM SERVICE PROCEDURE

3-Way Solenoid Valve (Exc. B2000): 626

Disconnect vacuum sensing tubes from 3-way solenoid valve and vacuum pipe. Blow through vacuum tube "B" shown in Fig 1. Air should escape through solenoid air filter. Disconnect electrical connector from solenoid and apply battery power to connector as shown in Fig 1. Blow through hose again; air should escape through bottom port. If valve does not respond as outlined, replace 3-way solenoid valve.

Fig 1: Testing 3-Way Solenoid Valve on Mazda 626
G09313932Courtesy of MAZDA MOTORS CORP.
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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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