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Home >> Ford >> 1991 >> Bronco 4.9 Y, Standard, M5OD-R2 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> DISTRIBUTORLESS Ignition System (Dis) 2.3L >> Test 6, Check Plugs & Wires
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Test 6, Check Plugs & Wires

Check spark plug wires for insulation damage, looseness, shorting or other damage. Remove and check spark plugs for damage, wear, carbon deposits and proper plug gap. If spark plug wires and spark plugs are good, reinstall, and go to next test. If components are faulty, service or replace as required. If vehicle still does not start, go to next test.