Auto Fuel Pressure Sensor 0281002706 0281002903 0281006053 0281002864 0281006112 0281002937

ERIKC For BOS 0281002937 AUTO CAR MAP Pressure Sensor 0281002706 0281002903 0281006053 0281002864 FOR FIAT For IVEC FORD MAN
 
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Injector FAQ
 

FAQ: Not Enough Resistance

ERIKC Answer:The solenoid at the top of the injector creates a magnetic field that pulls up the injector pintle when the injector is energized. The magnetic field must be strong enough to overcome the spring pressure and fuel pressure above the pintle, otherwise the injector may not open all the way. Shorts, opens or excessive resistance in the injector solenoid can also cause problems.

Typically, the solenoids often short internally when injectors fail, which causes a drop in resistance. If the specification calls for 3 ohms, for example, and an injector measures only 1 ohm, it will pull more current than the other injectors. Too much current flow to an injector may cause the PCM injector driver circuit to shut down, killing any other injectors that also share that same driver circuit. One way to check the injectors is with an ohmmeter.

FAQ: Longer Crank Times

An injector leak will cause the rail to lose pressure while the vehicle is sitting resulting in a longer than normal crank because the rail will need extra time to pressurize.