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 MANUALSCHEVROLET1986STEP VAN P30, 6.2 J, AUTOMATIC, 400/M40REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEADJUSTMENTTUNE-UP - V8TESTINGHIGH TENSION WIRE RESISTANCE
1986 Chevrolet Step Van P30, 6.2 J, Automatic, 400/M40
High Tension Wire Resistance
1986 Chevrolet Step Van P30, 6.2 J, Automatic, 400/M40SECTION High Tension Wire Resistance
Carefully remove ends of wire from spark plug and distributor. Using an ohmmeter, check resistance while gently twisting wire. If resistance is not to specifications, or fluctuates from infinity to any value, replace cable.
HIGH TENSION WIRE RESISTANCE
| Wire Length | Resistance |
|---|---|
| 0-24" | 30,000 Max. |
| Over 24" | 50,000 Max. |
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.