Question about 1998 Ford F150 Regular Cab

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Turns over but wont start i got fire and fuel to the fuel rail but the injecters are not delivering fuel any ideas whats wronge

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Sounds like u got no injector pulse comin from ecm.we need to pull ecm codes an review them ,possible camshaft sensors faulty they usually provide reference pulses to ecm for injector firing or pulse.without this pulse ur injectors will never open up to let fuel enter combustion chamber. one way of checking pulse is to connect a noid light(small light bulb that plugs in injector pigtail to chek for power to injector and ur pulsing ground coming from ecm to injector) an test for a blinking light while cranking engine.

Posted on Apr 08, 2011

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Do u have anti theft system bud, it could of been tripped

Posted on Mar 13, 2013

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Truck turns over trys to start then wont


The amount of fuel delivered to a properly functioning injected car is determined by sensors mounted throughout the vehicles air intake system. These sensors work together along with the ecu to control the fuel / air mix delivered to the cylinders.
We would need to isolate the components that have impact on the duration of time the injectors stay open. In troubleshooting it is often best to work backwards.
1. Injectors - Are they leaking
2. Pressure regulator - is the pressure at the fuel rail the right pressure?? (40psi for most fuel injected cars)
3. TPS- throttle position sensor- is this reading accurately...there are several different styles of these
4. Air flow meter - these also come in several varieties varys from mass air sensor / simple vane meters.
5. during startup there is a seperate circuit called the throttle bypass valve - this also may not be functioning if the flooding is occuring rapidly during startup. If the car starts and runs for a while than floods. this is probably not the culprit.
6. ultimately the ECU could have a problem as it is the link in the chain that ties everything together....though not likely.
Any of these these would have the potential to flood a vehicle if they were not functioning properly.
The amount of fuel delivered to a properly functioning injected car is determined by sensors mounted throughout the vehicles air intake system. These sensors work together along with the ecu to control the fuel / air mix delivered to the cylinders.
We would need to isolate the components that have impact on the duration of time the injectors stay open. In troubleshooting it is often best to work backwards.
1. Injectors - Are they leaking
2. Pressure regulator - is the pressure at the fuel rail the right pressure?? (40psi for most fuel injected cars)
3. TPS- throttle position sensor- is this reading accurately...there are several different styles of these
4. Air flow meter - these also come in several varieties varys from mass air sensor / simple vane meters.
5. during startup there is a seperate circuit called the throttle bypass valve - this also may not be functioning if the flooding is occuring rapidly during startup. If the car starts and runs for a while than floods. this is probably not the culprit.
6. ultimately the ECU could have a problem as it is the link in the chain that ties everything together....though not likely.
Any of these these would have the potential to flood a vehicle if they were not functioning properly. I would run a diagnostic check on your vechile to isolate your exact problem

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