Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1987 Mazda B2000 Base, 2D PickupFACTORY OEM SERVICE PROCEDURE
EGR Control Valve: B2600
- Bring engine to normal operating temperature and stop engine. Disconnect and plug vacuum hose at EGR control valve. Connect vacuum pump to 1st EGR control valve. Start engine and run at idle. Apply 1.58 in. Hg or more vacuum to EGR control valve with vacuum pump. Engine should run rough or stop.
- Repeat procedure on 2nd EGR control valve, applying 2.76 in. Hg or more vacuum. Engine should run rough or stop.
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:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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