Durango-Bob
NAXJA Forum User
- Location
- Greensburg, PA
What I thought was a lower radiator hose leak turned out to be a major leak under the intake manifold on my '90 4.0. I have no idea what could cause a leak in this area except maybe a cracked block. Anybody have any thoughts on what the problem could be?
History: My wife was driving the Jeep yesterday and noticed steam and coolant leaking when she stopped. She left it parked there and I towed it home. A quick look drove me to the conclusion that the lower hose was leaking since all the coolant that leaked out was on the left side of the engine (by the hose.) After removing the air box and electric fan (great tips - thanks) and replacing the hose, I refilled the system and let it idle. It took a few minutes for the tstat to open and then it started filling nicely. The cooling system is the stock closed system. After the system was full I let it run some more and checked underneath. It had a steady stream of water draining out and was actually spraying out of what appeared to be the side of the block. The area that has the leak is right where the preheater hose for the airbox is connected. Any help is appreciated.
History: My wife was driving the Jeep yesterday and noticed steam and coolant leaking when she stopped. She left it parked there and I towed it home. A quick look drove me to the conclusion that the lower hose was leaking since all the coolant that leaked out was on the left side of the engine (by the hose.) After removing the air box and electric fan (great tips - thanks) and replacing the hose, I refilled the system and let it idle. It took a few minutes for the tstat to open and then it started filling nicely. The cooling system is the stock closed system. After the system was full I let it run some more and checked underneath. It had a steady stream of water draining out and was actually spraying out of what appeared to be the side of the block. The area that has the leak is right where the preheater hose for the airbox is connected. Any help is appreciated.
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