i just replaced my ps pump as well but with leak
i just replaced the pump but can not get the high pressure hose to seal on the pump. dripping/streaming like mad. i replaced the o-ring that came with the pump with no success, also swapped the the female fitting in the new pump with the original one reading something of metric vs standard causing leak. 02 liberty 3.7 too... i'm thinking that maybe the hp hose needs to be replaced as well, some sort of blockage causeing too much backpressure where the o-ring seal to the pump can't handle the pressure... any ideas?