My mvp 3ton floor jack will pump p but wont hold

Videos and text based instructions.

https://www.google.com/search?q=MVP+Super+Lift++F-395+WM+add+oil

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https://www.harborfreight.com/15-ton-aluminum-racing-floor-jack-with-rapid-pump-62160.html


https://manuals.harborfreight.com/manuals/62000-62999/62160.pdf



1 5 Ton Aluminum Racing Floor Jack with Rapid Pump

with this little bit of information i suggest you do a web search using your question. " help repairing my MVP F765WM hydraulic jack " and look at the youtube videos to see if anyone there has the same issue as you do and found a fix. because this is a safety thing be extra careful as if it fails after you fix it bad things can happen. if your not a mechanical person then i would go get a new one. it is not worth having this fail if your under what is is holding up. as most people forget they need to use some type of support when working under a machine that is help up with a hydraulic jack. but it's you life.

most are in the gas tank.

Easy job if you have a floor jack, 2 floor stands and wrench.
Empty the gas tank, place jack centered on the gas tank jack up the car, put the floor stands in place to hold the car steady, disconnect the wiring go to the gas tank then remove the bolts (most cars only have 2 holding the tank braces, slowly lower the floor jack with the tank on it, remove the fuel pump slowly and carefully as not to have anything fall in the tank.
https://www.youtube.com/results?search_query=remove+gas+tank

Could be the wiring to the gas tank or the fuel pump which in most cars is in the gas tank, to remove the gas tank you'll need correct size wrench, floor jack (placed directly centered under the gas tank, and floor stands to hold the car steady.
Jack up the car, put floor stands in place, remove the wiring (check it to see it burned out or any other type of defect) remove bolts holding the tank in place then lower your floor jack (which should have never been removed) slowly take out the fuel pump carefully so nothing breaks off and stays in the fuel tank and replace it.
Check out some of these videos before you start.
https://www.youtube.com/results?search_query=replace+fuel+pump

Replace seals and oil

hydraulic jack oil. or like me use regular transmission fluid

a good grade hydraulic oil, a lot of part stores sell it if your in a bind and only if you can use ATF

About every 15 years, they need to be rebuilt

Have to find a hydraulic jack repair shop in your area

To replace the fuel pump u must remove the gas tank from the car, to do this u need to have the car as high off the ground as poss, a floor jack and safety jack stands are a must, after u have the car in the air and secured on jack stands put the floor jack under the gas tank and apply light pressure to support the tank, position it between the two metal straps that secure it into the car, remove the bolts or nuts that hold the metal straps at one engine and drop the tank down far enough to disconnect the electrical connector and the fuel and vapor lines and the fill and vent lines, then carefully lowe the tank and bring it out, remove the retainer that holds the fuel pump module in the tank, pay attention to the position of the tank fuel pump module for proper installation of the new fuel pump module, reverse above, in all about a 3-4 hour job with a helper.