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 MANUALSCHEVROLET1985G 30 VAN V8-350 5.7LREPAIR AND DIAGNOSISMAINTENANCETUNE-UP AND ENGINE PERFORMANCE CHECKSSERVICE AND REPAIRPROCEDURESTUNE-UP SERVICE STEPS
1985 Chevrolet G 30 Van V8-350 5.7L
Tune-up Service Steps
1985 Chevrolet G 30 Van V8-350 5.7LSECTION Tune-up Service Steps
Tune-up ServiceSteps
Diagnosis By Symptom Testing and Inspection
Recommended Tools, Parts Reminder List Electrical / Mechanical Repair
Service Precautions Service Precautions
1. Perform Initial Inspection and Test Drive. Testing and Inspection
2. Inspect/Replace Spark Plug(s), and perform Compression Check.
3. Inspect/Replace Ignition Cables.
4. Inspect/Replace Distributor Cap and Ignition Rotor.
5. Inspect Air Cleaner Housing and replace Air Filter Element if necessary.
6. Check and adjust if necessary:
- Ignition Timing.
- Idle Speed.
- Air/Fuel Mixture.
7. Check Fuel Pressure, replace Fuel Filter if necessary.
8. Check and Adjust Valve Clearance.
9. Perform Final Inspection and Test Drive. Testing and Inspection
Diagnosis By Symptom Testing and Inspection
Recommended Tools, Parts Reminder List Electrical / Mechanical Repair
Service Precautions Service Precautions
1. Perform Initial Inspection and Test Drive. Testing and Inspection
2. Inspect/Replace Spark Plug(s), and perform Compression Check.
3. Inspect/Replace Ignition Cables.
4. Inspect/Replace Distributor Cap and Ignition Rotor.
5. Inspect Air Cleaner Housing and replace Air Filter Element if necessary.
6. Check and adjust if necessary:
- Ignition Timing.
- Idle Speed.
- Air/Fuel Mixture.
7. Check Fuel Pressure, replace Fuel Filter if necessary.
8. Check and Adjust Valve Clearance.
9. Perform Final Inspection and Test Drive. Testing and Inspection
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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.