Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1987ECONOLINE E350, VAN DISPLAY, 4.9 YREPAIR AND DIAGNOSISENGINE PERFORMANCETUNE-UPIGNITION SYSTEM - DURA-SPARK II
1987 Ford Econoline E350, Van Display, 4.9 Y
Ignition System - DURA-Spark II
1987 Ford Econoline E350, Van Display, 4.9 YSECTION Ignition System - DURA-Spark II
- Description
- Operation
- System Precautions
- Adjustments
- Testing
- Notes
- Spark Plug Wire Resistance
- Start Circuit
- Run Circuit
- Control Module Voltage
- Resistance Wire
- Voltage Supply Circuits
- Ignition Coil Voltage Supply
- Pick-Up Coil & Distributor Wiring Harness
- Control Module-To-Distributor Wiring Harness
- Ignition Coil Secondary Resistance
- Module-To-Coil Wire
- Pick-Up Coil Resistance
- Ignition Coil Primary Resistance
- Primary Circuit Continuity
- Ground Circuit Continuity
- Distributor Ground Circuit Continuity
- Spark Timing
- Removal & Installation
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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.