Major coolant leak

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Mar 22, 2006 | 10:21 PM

1994_ranger

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Major coolant leak

I got a 94 Ranger with the 4.0 in it. It just rolled over to 178,000 miles and i am having a major coolant loss. I just used up a gallon of coolant in 2 days and im really stumped the reason why im lost on this is because its leaking outside the truck. I checked all the rad hoses and they are fine no leaks, i check the water pump and its dry as a bone. I watch it drip out onto the ground and it looks like its coming from the back of the motor so i know its not the radiator. Could my cylinder head be cracked where the water jacket is it and maybe its leaking from there? Im so lost and buying a gallon of coolant every 2 days is getting expensive.

Mar 23, 2006 | 11:24 AM

mrshorty

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Joined: Dec 2001

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From: UT

Possibilities:
heater core or heater hoses or bypass valve (if equipped)
freeze plug
lower intake manifold
heads/head gaskets

I would go to autozone and put down the deposit to borrow their cooling system pressure testing kit (I had this out a week ago for a radiator leak). Then you can pressurize the system cold and get behind the engine and figure out where it's leaking.

Mar 23, 2006 | 06:54 PM

AlfredB1979

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Joined: Jul 2003

Posts: 1,978

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From: Alvin, Texas.

Pull a few spark plugs and read them. If I remember correctly, if they look "steam cleaned", then you need to stop driving the truck for sure as you have some intake mani leak.