My sister in law has a 1996 Camry 4 cyl. Last month I changed the radiator because a hairline crack appeared in the top of the radiator. This time, the radiator, hoses, temp. are fine, but it purged all coolant from out of the water pump area, stalled, and now it won't start. It turns over fine, but dosen't seem to get spark. It didn't overheat. I haven't dug into it yet, I'm assuming its the water pump, but I cant figure out why it won't start. Anyone heard of this? Please help as soon as possible. Thanks