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 RX-7 Base, StandardFACTORY OEM SERVICE PROCEDURE
Delay Valve
- Disconnect vacuum delay valve. Connect approximately 3.5 ft. of vacuum tube to the vacuum pump tester. Completely shut the other side of the vacuum delay valve with your thumb.
- Apply a vacuum of over 19.7 in. Hg by using the vacuum pump tester. Release your thumb from vacuum delay valve and check time required for vacuum reading to decrease to 3.9 in. Hg from 15.7 in. Hg in approximately 13 seconds.
Factory Service Tools
Use the Manual With the Right Hardware
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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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