when I got jeep it would work off and on found some cracks in the hose so I replaced all the hoses and added a 2nd hose and a small tank that was going to get used to wash off more mud and it worked. but now I use the small tank and hose set up for when people tailgate to close it looks like the hose came off. but if you can hear it check first at the pump and make shour it is pumping water then from there you can blow air though the hose.