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 MANUALSMAZDA1999MX-5 MIATA L4-1.8L DOHCREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINESYSTEM SPECIFICATIONSOIL PUMP
1999 Mazda MX-5 Miata L4-1.8L DOHC
Oil Pump
1999 Mazda MX-5 Miata L4-1.8L DOHCSECTION Oil Pump
OIL PUMP SPECIFICATIONS
Torque 5.9-8.8 Nm (53-78 in lbs)
Inner Rotor Clearance
Standard Tooth Tip 0.02-0.18 mm (0.0008-0.0070 in)
Maximum Tooth Tip 0.20 mm (0.0079 in)
Outer Roter Clearance
Standard 0.090-0.176 mm (0.0036-0.0069 in)
Maximum 0.22mm (0.0087 in)
Side Clearance
Standard 0.03-0.11 mm (0.0012-0.0043)
Maximum 0.14mm (0.0055)
IMPORTANT: Standard oil pressure spring height value is obtained by applying a force of 62.8-68.6 N (14.1-15.4 ft lbs) while measuring.
Pressure Spring
Standard Height 35.42 mm (1.394)
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.