Injector Fuel Leakage

WARNING: This page is about a different car, the 1995 Mazda RX-7. However, it is still accessible from the selected car via links, so may be relevant.

Relieve fuel system pressure. See BASIC TESTING article. Remove air valve or dynamic chamber as necessary. Remove delivery pipe with hoses still connected. Remove fuel injectors. If necessary, secure injectors tightly onto delivery pipe using wire.
CAUTION: Ensure injectors are secured to delivery pipe. If injectors are not properly secured to delivery pipe, fuel may spray from loose connections.
Connect a jumper wire between terminals F/P and GND of Data Link Connector (DLC) located near battery. See Fig 1 .
Turn ignition on for 10 seconds. Turn ignition off, and clean injector nozzles. Turn ignition on. Ensure no fuel leakage exists at injectors. After one minute, a single drop of fuel is acceptable. If fuel leakage is present, replace faulty injector.

Fig 1: Identifying Data Link Connector Terminals

Courtesy of MAZDA MOTORS CORP.