I have Toyota Camry 1988 wagon and need instruction
On this old of a model there is no way to depressurize the system without breaking open a fitting. The easiest way to do this is to lightly crack open the fittings at the fuel filter and let the pressure bleed off into a jug. After the pressure is released you can safely unscrew, remove, replace and put back together. Do keep in mind once the new filter is installed the engine may crank immediately then die and it may require several moments of cranking to start due to the excess air in the system. Hope this helps, good luck!
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