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Old 01-22-2013, 09:11 AM
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I would hook up a fuel pressure gauge, turn the key to the run position but do not crank the engine. If you have less than about 50 psi of fuel pressure, then chances are that the check valve in the pump unit is bad and fuel is draining back into the tank when the pump stops running. The pump unit will need to be replaced to maintain volume in the lines.
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