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What would cause no fuel pressure

I was having problem starting, changed fuel regulator. No pressure. Then fuel pump and filter. Still no fuel pressure (0 psi) I can hear the relay click and pump going.

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Your fuel lines are clogged all UA gotta do is blow them out

Posted on Jun 05, 2015

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Hi.

Check the fuel filter and fuel pressure regulator. They are part of the same assembly and are located on top of the fuel pump. To replace the regulator # Disconnect fuel supply line at the Filter/Regulator nipple and releas locking spring tab (2 in diag.) on the regulator, then turn counterclockwise and pull out. To test regulator use a gauge like this in fuel lines:Pump Pressure Tester.
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It starts great but after we go somewhere and turn the engine off, it won't start until 45 min to 1 hr. It sounds flooded. but then after the time passes, it starts great again. have change mass flow...


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If it is high, the pressure regulator is at fault causing to much pressure rusulting in a flooding situation.

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I would next check the fuel pressure regulator if the pump was not pumping, or the filter was plugged some of the leftover waste in the lines from one or the other of these issues may have plugged the regulator causing inconsistent fuel pressure that would cause the engine to run rough, or possibley cut out fuel entirely, causing the vehicle to die

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the fuel pressure if leaking could cause this the regulator is located under the intake plenum but you should smell gas .if you dont then most likely the pump is bad ,the pump will come on for 2 seconds when the key is on then go off it will not stay on with just the key on only when you crank it will it .so have your fuel pressure checked with a gauge.

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