Toronado V6-3800 3.8L (1988)
6.
Restricting the fuel return line allows the fuel pump to develop its maximum pressure (dead head pressure). When battery voltage is applied to the
pump test terminal, pressure should be above 517.0 kPa (75.0 psi).
7.
This test determines if the high fuel pressure is due to a restricted fuel return line or a pressure regulator problem.