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.
1995 Infiniti J30FACTORY OEM SERVICE PROCEDURE
EGR Valve
- With engine idling, disconnect EGR vacuum hose. Apply vacuum directly to EGR valve. Engine should run rough or stall and EGR should hold vacuum. If engine RPM was not affected, go to step 2). If EGR valve does not hold vacuum, replace EGR valve.
- Manually compress EGR valve diaphragm from underside. If engine RPM does not change, remove EGR valve and inspect EGR passages for blockage. If engine RPM is affected by lifting EGR valve diaphragm, replace EGR valve.
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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