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 MANUALSCHEVROLET1987HI-CUBE 6.2 J, 400/M40REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEIGNITION SYSTEMIGNITION SYSTEM - HEI-EST (TBI MODELS)OVERHAULDISASSEMBLY
1987 Chevrolet Hi-Cube 6.2 J, 400/M40
Ignition System - HEI-Est (TBI Models): Overhaul: Disassembly
1987 Chevrolet Hi-Cube 6.2 J, 400/M40SECTION Disassembly
- Remove coil connector and disconnect 4-wire EST connector. Remove distributor cap and rotor. Separate pick-up coil leads from HEI module. Mark distributor reassembly reference and remove. Drive out roll pin and remove distributor shaft from housing.
- Remove retaining "C" washer, pick-up coil, magnet and pole piece. Remove 2 module attaching screws and capacitor screw. Lift module, capacitor and harness assembly from distributor housing. Disconnect wiring harness from module.
RENDER: 1.0x
NO RELATED
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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.