Why is my tank empty in 3 minutes in mighty pro rug doctor X3/ pump di

Mine is the might pro x3 rug doctor and I can't find. But water goes fast has to refill every 3 to 5 minutes…and no button is stuck is it me…not letting off so or something? I can't find no pump diagrams ( JLT SOLENOID PUMP P4XXA P40202A

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AC 120V 60Hz Internal Diode 50278 RUG DOCTOR L.P FENTON. MISSOURI SERIAL NO: 12H33) took apart to clean and blow clean hoses. From previous owners. Did at first, but didn't blow the hoses or trough the pump..finally did. Works greT just to much water