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Home >> Plymouth >> 1988 >> Horizon Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - TBI >> Testing >> Fuel System Pressure Testing >> Fuel System Pressure Release

Fuel System Pressure Release

  1. Fuel injection system holds constant pressure of 14.5 psi (1.0 kg/cm2 ). This pressure must be released before disconnecting any fuel carrying components. To release pressure in tank, open fuel tank cap slowly.
  2. To release remaining pressure in system, disconnect 2-pin connector from fuel injector. Using jumper wire, connect either injector terminal to ground. Connect remaining injector terminal to positive battery terminal with second jumper wire.
  3. DO NOT  keep injector connected to positive battery terminal for more than 10 seconds. Remove jumper wires. Fuel injection system loop can now be opened and fuel carrying components removed as pressure is fully released.