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 MANUALSBUICK1987REGAL GRAND NATIONALREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMFUEL PUMPTESTINGVOLUME TESTMECHANICAL
1987 Buick Regal Grand National
Volume Test: Mechanical
1987 Buick Regal Grand NationalSECTION Mechanical
- Check fuel supply to verify sufficient gasoline in the tank. Disconnect ignition wire from distributor so that engine will not start.
- Separate fuel line at carburetor inlet fitting. Install a piece of fuel resistant hose over the end of fuel line. Place end of hose into a gasoline container.
- Crank engine to activate fuel pump. The amount of fuel pumped will vary according to each manufacturer. The average pump output should be about one pint in 30 seconds.
- If little or no gasoline flows from hose, check fuel lines or gasoline tank filter for restrictions or leaks. If lines and filter are clear, pump is defective and must be replaced.
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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.