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Home >> Mercury >> 1982 >> LN7 Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Tune-Up - 4 CYL >> Fuel Pump

Fuel Pump

Make all tests with engine at normal operating temperature and at idle speed with transmission in neutral. When making pressure test pinch off pump-to-tank fuel return line.

Application Specification
Pressure
  1-6L 4.5-6.5 psi
  2.3L 5.0-7.0 psi
Volume
  1.6L 1 pint in 30 sec.
  2.3L 1 pint in 20 sec.