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 WINDOW, 7.5 LREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEIGNITION SYSTEMIGNITION SYSTEM - DURA-SPARK IITESTINGSTART CIRCUIT
1987 Ford Econoline E350, Van Window, 7.5 L
Start Circuit
1987 Ford Econoline E350, Van Window, 7.5 LSECTION Start Circuit
- Connect Spark Tester (D81P-6666-A) between ignition coil wire and a good engine ground. Crank engine using vehicle's ignition switch. If no sparks occur at tester gap, proceed to step 2). If sparks occur at tester gap, proceed to RUN CIRCUIT CHECK.
- If no sparks occurred in step 1), remove coil wire from distributor cap and ignition coil. Connect ohmmeter leads to both ends of coil wire, and measure resistance.
- If resistance is over 7000 ohms per foot, replace coil wire. Inspect ignition coil for damage or carbon tracking. Crank engine to verify distributor rotation and proceed to VOLTAGE SUPPLY CIRCUITS test.
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.