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.
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HOMESERVICE MANUALSMAZDA1995B4000 4WD V6-4.0L OHVREPAIR AND DIAGNOSISSTARTING AND CHARGINGSTARTING SYSTEMTESTING AND INSPECTIONSYSTEM TESTINGNO-LOAD TEST
1995 Mazda B4000 4WD V6-4.0L OHV
No-Load Test
1995 Mazda B4000 4WD V6-4.0L OHVSECTION No-Load Test
1. Make test connections with starting and charging tester as in Fig. 24. Ensure current is not flowing through ammeter (rheostat at maximum counterclockwise position).
2. Disconnect starter from battery. Then reduce resistance of rheostat until voltmeter indicates same reading as obtained while starter was running. Ammeter will indicate no-load current draw, compare this to that of the specification chart.
3. If current exceeded specification, inspect for rubbing armature, bent shaft, binding bearings or shorts in armature and brush assembly.
Fig. 24 No-load Test Connections:
2. Disconnect starter from battery. Then reduce resistance of rheostat until voltmeter indicates same reading as obtained while starter was running. Ammeter will indicate no-load current draw, compare this to that of the specification chart.
3. If current exceeded specification, inspect for rubbing armature, bent shaft, binding bearings or shorts in armature and brush assembly.
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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.