Small crack in radiator

You could be loosing antifreeze through a pin hole in a hose or a loose clamp as steam. If you can smell a sweet oder when the car is hot that would be baptized antifreeze. Could be a pin hole in the radiator or a small crack in the block.

If it's spraying out, it's something that is under pressure, like the brand new radiator, maybe a pin hole in it. Were the radiator hoses also replaced at the same time? If not, hoses may have a pin hole too. Can't rule out the new radiator, BUT my guess is one of the radiator hoses caused this. One last possibility is the overflow tank. This also will be under pressure, and if it's old, may also have a crack. Best way to track down a coolant leak is to borrow or rent a pressure test pump. Take the radiator cap off and hook up the pump. Pump it a to get pressure up a bit, but not too much, should see right where the leak is. Most auto parts stores lend this devise out.

crack block problem would cause engine overheating problems check radiator see if radiator has a leak could have rust in radiator.check for leaking hoses check water pump see if you wet signs where pump leaking at weep hole. if you suspect crack cylinder head.you need to do a cylinder leak detector test using air pressure looking for stream of bubbles in the radiator.

Check the cooling fan, maybe is not turning on

I really don't think you can dent the "Pumpkin" per se, since it's made of Cast Steel and that would mean its probably a crack... Do you mean the pumpkin 'cover' is dented and has a pin hole? Either way, if there is a crack/pin hole in the Diff, I'd be extremely careful.. And make sure the damage is minor since your dealing with something that can explode on you going down the road - causing the rear wheel's to lock up..!

Is your radiator Plastic and metal? or Just metal? where is the crack? Can you see the "crack" or can you just see it leaking antifreze? It could be a hose clamp leak,or small hole? At this point without knowing that it is a crack for sure ,all I can say is check hose clamps ,they also sell a product called Bars . Any auto parts store has ,it seals small radiator leaks ,be sure to follow directions on bottle! I would recommend changing the raditor if your keeping the car,or really depend
on it,they like to go bad at the worst possible times!

Your water pump may have failed, or your radiator hose may have a crack or pin hole. The best way to find out is to first fill your radiator, then run the car for about 5 to 10 minutes, then shut the car off and look underneath. First at the water pump. There is a small hole on the bottom of the pump, just behind the pully (this is called the wheep hole) If water is "wheeping" from this hole then your water pump is bad, if not do a visual check on your bottom and top radiator hoses to see if there is a problem with either of them. You may also want to inspect your radiator itself for leaks as well. You could have a cracked radiator.

Just find the leak. Do you know where the leak is at? Check all end hoses. Make sure clamps are on tight. Leaking coolant on the wires cause major problems.

If steam is coming out of it it is an very small hole.
You can take the radiator to a radiator repair shop and have the hole fixed if it is that small. They usually charge less than $50 for small core holes like that if they can be fixed.

Your other option is replacement which will be substantially more money.

You can try yourself with JB Weld or take to a Radiator Shop and have it Repaired.