ome common fuel injection problems can be traced back to a faulty or non-operational fuel pump.
If your pump is noisy and loud, or the fuel pressure in the engine compartment is below what is needed for proper fuel injection operation, then it's probably time to replace it. The fuel pump is a not as simple a device as one might think. The fuel actually runs through the pump and acts as a coolant and lubricant for the entire assembly. Therefore, if you let your car run out of gas, make sure that you turn off the car immediately, or you might damage the internal components of the pump.
Typical fuel pump problems can sometimes be headed off in advance. If the pump is noisy, and making loud clicking noises, then chances are that the bearings inside are worn and should be replaced. If the pump continues to make noise even after the ignition is shut off, internal check-valves in the pump may be showing signs of failure. The pump could seize up at some time, or the pressure to the fuel injection system could drop. Either way, the car will not be performing at its peak. Another symptom of failure is the pump getting stuck, and then finally kicking in after turning the ignition on and off a couple of times. This could be a clear sign that you are living on borrowed time, and that you should replace the pump immediately. Check the electrical connections to the pump before you replace it to make sure that it's not an electrical problem.
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