Have the fuel pressure checked. Although you can hear the fuel pump humming, that does not give you an indication of the pressure it produces. With the engine idling the pressure should be 55-61 psi. (With engine idling and warm the pressure should be around 46-55 psi)
If pressure is low, check for a clogged fuel filter or restriction in the lines before condemning the fuel pump. Let me know how it goes.
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Wednesday, April 15th, 2015 AT 7:40 AM