940 SE L4-2320cc 2.3L SOHC Turbo VIN 87 B230FT (1991)
Cold Start Injector: Testing and Inspection
Injector Leak and Spray Pattern Test
NOTE: Before attempting this test, make sure that the fuel system pressure is to specifications. If incorrect fuel pressure is suspected, perform FUEL
SYSTEM PRESSURE TEST first.
1.
Remove electrical connector from cold start injector.
2.
Disconnect the cold start injector from the intake manifold.
Bridging System Relay
3.
Turn ignition OFF.
4.
To start fuel pumps, remove the system relay (located in center console behind ash tray) and seat belt reminder relay.
5.
Connect a lead between terminals 30 and 87/2 and between 30 and 85 on relay base. The fuel pumps should start operating. Check by listening to
the pumps. Fuel tank pump can be heard by removing the tank cap. If fuel pumps do not run, see FUEL PUMPS.
Bridging Suppressor Relay
6.
Disconnect suppressor relay located in front of coolant expansion tank.
7.
Bridge terminals 3 and 4 of relay base.
8.
Check for the one terminal with current at cold start injector connector.
9.
Connect a test lead between that terminal and its connection at the injector.
10.
Connect a lead between ground and the other terminal at the injector. Injector will now start operating.
11.
Use a fuel resistant clear container to catch the fuel.
