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Fuel pump hums like it is pumping engine getting spark but will not start. Would a fuel pump make a humming sound if diaphragm is bad What else could be wrong?
Wiki User
∙ 13y ago
It turned out to be that the motor in the fuel pump was good but the pump was shot, thus the humming sound. I replaced the pump only and bingo! Everything is fine.
Wiki User
∙ 13y ago
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