MX-3 L4-1597cc 1.6L (1992)
Energizing Fuel Pump At Diagnostic Connector
3.
Energize fuel pump by bridging terminals "Fp" and "GND" of diagnostic test connector and turning the ignition "ON".
4.
One at a time, place nozzle end of each injector into a suitable container, and energize injector momentarily by applying power and ground while
observing spray pattern. A finely atomized, cone shaped mist of fuel should spray from injector nozzle.
WARNING:Fire hazard. Use appropriate connectors and long jumper wires. Do not create sparks near injectors or container of fuel. Injector fuel
mist is easily ignited.
5.
Repeat step 4 for each injector.
6.
Dry injector tips with a clean cloth and check for fuel dripping. After a minute or so, some wetting or even a drop of fuel seeping from an injector
nozzle is acceptable. More than one drip per minute, with the fuel pump running, is unacceptable.
6.
Leaking injectors and injectors with poor spray patterns can sometimes be cleaned, with a chemical fuel system cleaner, and re-used. Use a cleaner
designed for fuel injectors.
NOTE:Some brands of gasoline contain a cleaning additive for fuel injection systems. If clogged or leaking injectors are suspected, switching to
one of these brands may help.
7.
If cleaning does not restore normal injector operation, replace injector(s).
