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FLA -298 FUEL SYSTEM Specification : After engine stops, the gauge reading should hold for about 5 minutes. 9) Is the measured fuel pressure within specification? YES ▶ Go to "Component inspection" procedure. NO ▶ Repair or replace according to the table below. Condition Possible Cause Suspected area Clogged filter Fuel filter Fuel pressure too low Fuel leak on the fuel-pressure regulator that is assembled on fuel pump because of poor seating of the fuel-pressure regulator Fuel pressure regulator Fuel pressure too high Sticking fuel pressure regulator Fuel pressure regulator Fuel pressure drops slowly after engine is stopped Injector leak Injector Fuel pressure drops immediately after engine is stopped The check valve within the fuel pump is open Fuel pump COMPONENT INSPECTION E8FB3042 1. Check PCV 1) IG "OFF" and remove PCV valve from cylinder head 2) With engine idling, block PCV valve and confirm that vacuum is felt. 3) Insert thin stick into the screwed PCV valve and verify that the plunger is moving. 4) Is the PCV valve normally moving? YES ▶ Go to "Check PCSV as follows. NO ▶ Replace it, and go to "Verification of Vehicle Repair" procedure. 2. Check PCSV 1) IG "OFF" and disconnect PCSV and vacuum hose. 2) Connect hand-vacuum gage with PCSV and supply vacuum to it. 3) Is the vacuum maintained ? YES |