Alliance/Encore L4-1721cc 105 CID (1985)
Fig. 3 Diagnostic connectors
FUEL SYSTEM TESTS
Fuel Pump Pressure
1.
With engine off, disconnect cold start injector input fuel hose or injector ramp assembly and pressure regulator hose, then using ``T'' connector,
connect pressure gauge.
2.
Connect jumper wire between terminals D1-5 and D1-6, Fig. 3.
3.
If pressure is not approximately 70 psi, check fuel pump, electrical circuit, and fuel filter and repair or replace as necessary.
Pressure Regulator Operation
1.
Using a vacuum pump with engine off, apply 16 in. Hg to pressure regulator.
2.
Connect jumper wire between terminals D1-5 and D1-6, Fig. 3.
3.
If pressure is not between 17 and 23 psi on Alliance and Encore models, or 27 and 33 psi on Fuego and Sportwagon models, replace pressure
regulator.
Injectors For Leakage
Note: The following test is to be performed on Alliance and Encore models only.
1.
With engine off, disconnect injector wire connectors.
2.
Remove injector ramp assembly with injectors and cold start injector.
3.
Connect a jumper wire between terminals D1-5 and D1-6, Fig. 3.
4.
If injectors leak, replace them.
