by ellis93 » Wed Feb 27, 2013 12:06 pm
Under the fitting in the rear of the pump,where the high psi line attaches,there's a spool valve. It can stick and cause the pump to not make fluid psi. I've had this happen before and it can be a real pita to make work right again. I don't know why they do this but the a1 cardone pumps have ruined my life more than once over it.
To make it go again, take the return loose from the steering sector and hold it up so no fluid will come out. with that off fill the reservoir full and cap it back up. Have someone crank over on the truck,without starting it, while you supply shop air to the return line to pressure up the pumps reservoir. The pressure will force the fluid into the pump,effectively evacuating the air trapped inside the vain and spool valve. This will work but will be messy.
93 D250 ,5 speed,4.11s,k&n autometer tach pyro trans boost guages,GDS 60mm h1c 14cm,honed 5x10,hplp/reg,1/8 timing,M+H M2 fuel pin, tims cooler tubz