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Home >> Mercury >> 1982 >> Zephyr L6-200 3.3L >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Testing and Inspection >> Component Tests and General Diagnostics >> Primary Circuit Tests >> Test 1, Start Circuit
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Test 1, Start Circuit

Spark plug tester:






Procedure
1. Connect a suitable spark tester between coil wire and a suitable ground, Fig. 1.
2. While cranking engine, check for sparks.
3. If spark is observed, proceed to Test 2. If spark does not occur, measure coil wire resistance. If resistance exceeds 7000 ohms per foot replace wire. Test 2, Run Circuit
4. If coil wire is satisfactory, inspect coil for signs of carbon tracking or external damage and inspect distributor shaft with engine cranking to ensure distributor shaft rotation. Proceed to Test 5. Test 5, Supply Voltage Circuit



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