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.
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HOMESERVICE MANUALSMAZDA1999626 ES, 2.5 D, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 17 (ENGINE MECHANICAL)REMOVAL & INSTALLATIONINTAKE MANIFOLDREMOVAL
1999 Mazda 626 ES, 2.5 D, Standard
Intake Manifold: Removal
1999 Mazda 626 ES, 2.5 D, StandardSECTION Removal
WARNING: This page is about a different car, the 2001 Mazda MPV and 2000 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
- Release fuel pressure. See FUEL PRESSURE RELEASE . Drain cooling system. Disconnect negative battery cable.
- Remove air cleaner assembly. Remove fuse box, battery and battery tray to remove fresh-air duct. Remove front, left-side mudguard and resonance chamber. Remove MAF sensor and air hose. Disconnect necessary control cables, electrical connections, coolant hoses, vacuum hoses and fuel lines.
- Remove throttle body, EGR valve, IAC valve and PRC solenoid valve. Loosen intake manifold retaining bolts and nuts evenly using several steps. Remove intake manifold assembly and gaskets. See Figure.
- If removing fuel injectors, remove retaining bolts, fuel injector retainer, insulators, fuel injectors, fuel rail and pressure regulator, and fuel rail insulators (if necessary). See Figure. Fuel rail insulators are located between fuel rail and intake manifold.
CAUTION:
Ensure notch on side of fuel injector engages with notch in fuel rail.
RENDER: 1.0x
NO RELATED
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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.