wrxmad

hi there
pick my boy up from school friday.on the way back started to miss fire.it was low on fuel..ok i thought..got home and noticed water pissing out from my water pump..****!!!. would this affect the running and causing it to miss fire badly??just put a fivers worth in..still doning it??so ive stripped down the front of the engine and taken out the duff water pump...checked oil no water leaking into oil..head gasket check. seems ok.would the water pump
going make the car badly missfire?..water temp was normal .. any help on this guys..thanks