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HOMESERVICE MANUALSFORD1996RV CUTAWAY 5.8 HREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 11 (ENGINE CONTROLS - SYSTEM/COMPONENT TESTS - 7.5L EEC-IV)IGNITION SYSTEMPINPOINT TEST F - MISFIRE UNDER LOADDIAGNOSTIC AIDS
1996 Ford RV Cutaway 5.8 H

Diagnostic Aids

1996 Ford RV Cutaway 5.8 HSECTION Diagnostic Aids
WARNING: This page is about a different variant/trim than selected.
  • An engine analyzer is used to diagnose problems in secondary side of ignition system.
  • Visually inspect engine compartment to ensure vacuum hoses and spark plug wires are properly routed and securely connected.
  • Examine all wiring harnesses and connectors for insulation damage and burned, overheated, loose and broken conditions.
  • Ensure battery is fully charged and all accessories are turned off during testing.
  • Use an engine analyzer or lab scope and EI Adapter (Rotunda 007-00044) in these testing procedures.
  1. Check If Engine Will Start  If engine starts, go to next step. If engine does not start, check ignition coil for damage or carbon tracking. Also, check coil wire resistance. Resistance should be 7000 ohms or less per foot. Repair as necessary. If coil and wire are okay, go to the DISTRIBUTOR IGNITION PINPOINT TEST INDEX  table.
  2. Viewing Ignition System Secondary Display  Connect engine analyzer to view parade display of ignition system secondary. While slowly increasing engine speed from idle to 2000 RPM, compare engine analyzer display to illustrations. See Fig 1 . Illustrations shown are for a 4-cylinder engine but are typical for all EI engines.
Fig 1: Identifying EI Secondary Voltage Scope Patterns
G91H11251
RENDER: 1.0x

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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.