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 Suzuki Samurai BaseFACTORY OEM SERVICE PROCEDURE
EGR Valve
- Run engine with engine temperature below 131°F (55°C). Ensure that EGR valve diaphragm does not operate. Check by touching diaphragm with finger.CAUTION: Wear gloves in case EGR valve is hot.
- Warm engine to normal operating temperature. Increase engine speed. Diaphragm should move away from piston side of EGR valve during acceleration. Decelerate engine and check that diaphragm moves toward piston side of EGR valve. See Fig 2 .
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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