Test 7, Check Plugs & Wires

Check spark plug wires for insulation damage, looseness, shorting or other damage. Remove spark plugs, and check plugs for damage, wear, carbon deposits and proper plug gap. If spark plugs and spark plug wires are good, reinstall, and go to TEST 12. If any components are not good, repair or replace as required. Remove all test equipment, and check for fault codes.