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.
1989 Mazda RX-7 Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Throttle Body
- No. 1 secondary throttle valve starts to open when primary valve opens with proper amount of degrees. See Fig 1 . Secondary throttle valve should be completely open when the primary valve fully opens.
- Check clearance between primary throttle valve and throttle bore wall when No. 1 secondary valve starts to open. Clearance should be within specification. See PRIMARY THROTTLE VALVE CLEARANCE table. If clearance is not within specification, bend tab until the proper clearance is obtained. See Fig 2 .
PRIMARY THROTTLE VALVE CLEARANCE
| Application | In. (mm) | |
|---|---|---|
| Non-Turbo | ||
| A/T | .03-.06 (.8-1.5) | |
| M/T | .02-.03 (.5-.8) | |
| Turbo | .04-.07 (1.0-1.8) | |
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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