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Home >> Ford >> 2002 >> Crown Victoria Base, 4.6 9 >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - System & Component Tests - EEC-V - NGV >> Fuel Systems >> Compressed Natural Gas Leak Test >> Fuel Tanks, Filter & Lines

Fuel Tanks, Filter & Lines

NOTE: Verify system pressure is no less than 1500 psi (105.5 kg/cm2 ). If system pressure is less than 1500 psi (105.5 kg/cm2 ), refuel vehicle.

Using combustible gas detector, check fuel tank(s), coalescent filter and fuel line connections for leaks. If a leak is detected, verify that fittings are tightened properly, then retest. If leak is still present, inspect "O" ring, "O" ring seat and sealing surfaces for any damage, distortion or contamination. Repair as necessary and retest.