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, AutomaticFACTORY OEM SERVICE PROCEDURE
Throttle Chamber (Non-Turbo)
- The No. 1 secondary throttle valve starts to open when the primary valve opens 12 degrees (man. trans.) or 8 degrees (auto. trans.). See Fig 1 . Secondary throttle valve should be completely open when the primary valve fully opens.
- Check the clearance between the primary throttle valve and the wall of the throttle bore when the No. 1 secondary valve starts to open.
- Clearance should be .02-.03" (.5-.7 mm) for manual transmission. Clearance should be .03-.06 (.8-.14 mm) for automatic transmission. See Fig 1 . If not, bend the tab until the proper clearance is obtained. See Figure .
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.