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Fuel Injector Leakage Test

  1. Install Fuel Injector Tester/Cleaner (113-00001A). Clean injectors according to tester/cleaner manufacturer's instructions. After injectors are cleaned, check for fuel system pressure loss. On 1.8L and 2.0L A/T, if pressure loss is observed, remove injectors and individually check (bench test) injector leakage rate. Maximum injector leakage rate is one drop per minute. Replace injector if maximum leakage rate is exceeded.
  2. On 2.5L, fuel injectors are side inject type and cannot be bench tested. Disconnect fuel rail from intake manifold, leaving fuel hoses connected. Using jumper wire, connect fuel pump terminal to ground terminal to activate fuel pump. See Figure. Turn ignition on for 10 seconds. Maximum injector leakage rate is one drop per minute. Replace injector if maximum leakage rate is exceeded.