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 MANUALSCHEVROLET1987STEP VAN P20, 6.2 J, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMCCC TBI TESTS W/CODESDIAGNOSTIC CHARTSCHART A3 - ENGINE CRANKS, BUT WILL NOT RUN (2.5L)DIAGNOSTIC AIDS

1987 Chevrolet Step Van P20, 6.2 J, Standard

Diagnostic Aids

1987 Chevrolet Step Van P20, 6.2 J, StandardSECTION Diagnostic Aids

If no trouble is found in ECM, fuel pump, and/or ignition system, check for fouled spark plugs, EGR valve stuck in open position, and/or low fuel pressure. See CHART A6.

Fig 1: Chart A3 - Engine Cranks, But Will Not Run (2.5L)

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.