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.
1983 Chevrolet Sportvan G10, 5.7 LFACTORY OEM SERVICE PROCEDURE
Distributor Pick-Up Coil
- Connect external vacuum source to vacuum advance unit. If vacuum advance unit is inoperative, replace unit. To check pick-up coil for shorts, connect the ohmmeter leads as shown by meter "A" in Fig 1.
- Set on middle scale of meter. Operate vacuum advance through range. Reading should be infinite at all times. If not, replace pick-up coil.
- To check pick-up coil resistance, connect ohmmeter leads as shown by meter "B" in Fig 1. Again use the middle scale. Operate vacuum advance through its range. Ohmmeter reading should be 500-1500 ohms in all advance positions. If readings are not as specified, replace pick-up coil.
Factory Service Tools
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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.
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