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HOMESERVICE MANUALSPLYMOUTH1982HORIZON BASE, 2.2L ENG VIN B, STANDARD TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEENGINE CONTROL SYSTEMSELECTRONIC FUEL CONTROLTESTINGELECTRONIC SPARK CONTROL SYSTEM TESTSSPARK CONTROL COMPUTER SPARK TEST
1982 Plymouth Horizon Base, 2.2L Eng VIN B, Standard Trans

Spark Control Computer Spark Test

1982 Plymouth Horizon Base, 2.2L Eng VIN B, Standard TransSECTION Spark Control Computer Spark Test
  1. Warm engine to normal operating temperature. Disconnect carburetor switch or unground it. Be sure coolant temperature switch/sensor is connected and working properly.
  2. Remove and plug vacuum hose at vacuum transducer. Connect an auxiliary vacuum supply to vacuum transducer and apply 16 in. Hg. Increase engine speed to 2000 RPM and wait 1 minute before checking specifications. Advance specifications are in addition to basic advance. See Spark Advance Test Specifications table.
  3. If computer fails to obtain settings, replace computer.
    Spark Advance Test Specifications

    Computer Part No. Spark Advance (1)
    5213437 51-59°
    5213438 46-54°
    5213480 41-49°
    5213481 43-51°
    5213482 41-49°
    5213483 41-49°
    5213486 40-48°
    5213542 51-59°
    5213544 46-54°
    5213546 39-47°
    5213546 (2) 27-35°
    5213594 33-41°
    (1) With engine speed at 2000 RPM and 16 in. Hg vacuum applied.
    (2) High Altitude.
RENDER: 1.0x

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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.