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 MANUALSBUICK1987CENTURY CUSTOM, 4D SEDAN, 2.5 RREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISFUEL INJECTION SYSTEM - PFITROUBLE SHOOTINGCUTS OUT, MISSES
1987 Buick Century Custom, 4D Sedan, 2.5 R
Cuts Out, Misses
1987 Buick Century Custom, 4D Sedan, 2.5 RSECTION Cuts Out, Misses
Check injector balance. See INJECTOR BALANCE TEST chart. Check for restricted fuel filter and water in tank. Check for low fuel pressure. See FUEL SYSTEM DIAGNOSIS chart in the appropriate PFI TESTS W/ CODES.
RENDER: 1.0x
NO RELATED
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Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.