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Home >> Audi >> 1978 >> 5000 Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> BOSCH Cis Fuel Injection - AUDI & VOLKSWAGEN >> Testing >> Rest Pressure Test >> 1978-79 Models

1978-79 Models

Perform warm engine control pressure test first. Remove bridge from fuel pump relay. Pressure should drop to 28-37 psi (2.0-2.6 kg/cm2 ). If pressure drops below 28 psi (2.0 kg/cm2 ), fuel pump check valve is probably defective.