Pump motor will not turn over without manual priming?

Without knowing the vehicle a fuel injected car all you have to do is turn the key on and off 3 times for 10 seconds each. Carburetor is a bit harder. If the system does not leak cranking it can get it done but dumping a little gas in the carb will cause it to start and pump the manual pump much faster to prime the system. With a leaking manual pump it just takes a lot of cranking.

If its Petrol engine, the fuel pump should prime for few seconds and cut out. then it should run continuously once the engine starts turning. Please check if your exhaust has heavy black sooth deposits. maybe the cause for your high fuel consumption may be something else.

Try downloading it from: http://www.riverbendind.com/MiscPDF/Monarch-BE-Type-TM.pdf

Airless paint sprayers should not turn off while in prime mode. As long as the prime valve is open the motor can pump paint but the system will not build any pressure. Once the prime valve is closed the pump should pump paint into the hose until it gets to the pressure level required to turn the motor off. If the pump does not turn off with the prime valve closed, it could be that the spring in the valve is weak and won't hold the valve closed under pressure. If the hose is up to pressure and the motor just keeps trying to pump paint, you may have a bad pressure sensor or it is disconnected from the circuit board.

IT TURNS OFF TO THE LEFT, YOU NEED A 7/16 OR A 11 mm WRENCH TO HOLD THE ROTOR AT THE BACK OF THE MOTOR.. LOOK FOR THE NOTCH IN THE SHAFT UNDER THE SYNTRIFICAL SWITCH ASSEMBLY , BE CAREFUL NOT TO BREAK ANYTHING ON THE BACK OF THE MOTOR. REPLACE THE SEAL ! THERE IS A GUY SELLING SHAFT SEAL HAYWARD SUPER PUMP MOTOR REPAIR KIT & how to
ON EBAY .. HEY YOU .. PRIME THAT PUMP AFTYER ANY PUMP REPAIR !! THERE NOT SELF PRIMING UNTIL THERE INITIALLY PRIMED IN FIRST PLACE !!! AKA PUT WATER IN THE PUMP !.. IF I WAS OF HELP CLICK ON THAT (YES) BUTTON ON THE BOTTOM LEFT OF THE PAGE.. REMEMBER A CLEAN POOL IS A SAFER POOL .. JAY THE POOL PUMP MOTOR REPAIR GUY IN LONGWOOD FLORIDA ..

A humming noise is fairly normal if the pump is running and pumping correctly. I am guessing this is not the case. Usually it is just a stuck impeller that is the culprit. Power down the unit and open the pump housing to access the impeller. Then gently turn the impeller feeling for resistance (some resistance is normal from the magnets of the motor). If everything seems ok close and secure the pump housing. Try powering the unit on and see if it starts up correctly. If it is still having issues manually prime the pump. If the pump runs correctly for a few minutes after manually priming but slows or stops you have a leaky seal or fitting to find. Finding the seal is not hard but will take a little time and patience. With your garden hose, very carefully run water over each joint and fitting with the pump running. It will take a minute or so of water running over a leaky seal for the pump to prime so take your time. Make sure not to get water on the motor as it can deliver a very nasty shock and destroy the motor. If none of this gets you up and running the cause may be the motor is bad and needs replacing.

Turn the ignition key to the ON position without starting the engine

You should hear the fuel pump priming for about a few seconds then shutting itself off.
If not hear replace the engine oil pressure switch
The 3rd wire to that switch is the pumps prime switch lead.
When the engines oil pressure is reached the computer will shut that circuit off and turn on the fuel pump relay
If you hear the pump prime the relay maybe at fault instead

Is there a place to prime the pump? Self priming doesn't necessarily mean it doesn't need help. If there is no place tp put water in the pump, consider disconnecting the suction hose and fill ith with water, hold the hose up toward the motor to get the most water in you can, then reattach it to the pool and try again.

Although you Say the Fuel Pump is Fine, What you Discribe is A NO FUEL Problem If it Starts When Priming and Does Not Without Prime this IS a Fuel Pump Problem NOTE: If you HEAR the Fuel Pump this only Indicates that the MOTOR that Drives the Fuel Pump Works , A Fuel Puessure Test Will Determine if your Fuel Pump In FACT DOES Work.

Make sure you try to prime right when the machine is turned on, so that there is no boiler pressure making it more difficult to prime.

Johnny C

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