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-   -   heavily Leaking coolant not water pump (http://www.wranglerforum.com/f282/heavily-leaking-coolant-not-water-pump-101538.html)

cfish133 07-07-2011 07:26 PM

heavily Leaking coolant not water pump
 
96 4.0 coolant is leaking from what appeared to be water pump, although I had just replaced this 6 months previous. My engine overheated while heading home from July 3rd party, inspected the next day and filled with coolant as radiator was near empty and coolant was just replaced a few weeks previous. While filling coolant started to drain out from what appeared to be the water pump, this kinda made me a bit pissed as it is not the easiest fix and had just done this recently. Changed out the water pump to realize the coolant is leaking from just below this in what looks to be the front of the oil pan..... However there is no oil in the coolant leaking out, nor is there water in the oil. Could this be the heater core???

Skyhawk32 07-07-2011 08:27 PM

See if it is comming from the front of the head, it might be a headgasket. The heater core is inside abd under the dash

just_e 07-07-2011 08:34 PM

could possibly be a faulty manufactured pump... its rare but I had this happen to my Lexus when I had it... :banghead: That was no fun at all!

Curro 07-07-2011 08:37 PM

Are you sure it coming from the oil pan? When my water pump went it appeared to be leaking from the front of the oil pan but it was actually just channeling down there. Have you put in the new water pump yet?

onroad 07-07-2011 08:47 PM

There's nothing on the front of the block below the water pump that will leak coolant, right below the pump is the timing case. Are you sure the leak isn't from above the pump, running down behind the pulley giving a false impression that it's below? Sounds like you have a huge hole if it's coming out with no pressure in the system. The water outlet is often a culprit, which is right above the pump and can have a crack in its housing, leak from the gasket, the radiator or heater hose connection, or the temp sender. The water pump also has a tube threaded into the left side of its housing going to the heater hose. Something to consider, but not likely.

cfish133 07-08-2011 10:44 AM

It is very weird. I had replaced the pump 6 months ago and installed a new one 3 days ago. I had figured this would fix the problem however appears to be leaking from the same area still. All around the pump and above it looks perfectly dry. Offroad "Sounds like you have a huge hole if it's coming out with no pressure in the system". It is definitely a big hole; thought it may have been a freeze plug that may have went when it overheated, however that is apparently on the back of the engine by tranny connection. I suppose my best bet is to once again try installing another pump although OEM style if possible this time. It's very odd, but although frustrating; looks to be a less expensive fix than I had thought.

onroad 07-11-2011 11:29 PM

Before you replace the pump again, check the gasket of the water outlet, which is right above the water pump. The stat is inside here. They can leak at the gasket or have a crack in the housing that may be hard to tell. It may trickle down around the water pump and look like it's coming out below. If there's a lot of crud and snot around the area of the leak try spraying it down with some carb cleaner and help pinpoint where it's originating.

hookuspookus 07-12-2011 07:00 PM

Quote:

Originally Posted by onroad (Post 1372127)
Before you replace the pump again, check the gasket of the water outlet, which is right above the water pump. The stat is inside here. They can leak at the gasket or have a crack in the housing that may be hard to tell. It may trickle down around the water pump and look like it's coming out below. If there's a lot of crud and snot around the area of the leak try spraying it down with some carb cleaner and help pinpoint where it's originating.

good call i had this happen to a old chevy i had , i hope he used a NEW pump and not a remanufactured one

hookuspookus 07-12-2011 07:04 PM

Quote:

Originally Posted by cfish133 (Post 1360882)
96 4.0 coolant is leaking from what appeared to be water pump, although I had just replaced this 6 months previous. My engine overheated while heading home from July 3rd party, inspected the next day and filled with coolant as radiator was near empty and coolant was just replaced a few weeks previous. While filling coolant started to drain out from what appeared to be the water pump, this kinda made me a bit pissed as it is not the easiest fix and had just done this recently. Changed out the water pump to realize the coolant is leaking from just below this in what looks to be the front of the oil pan..... However there is no oil in the coolant leaking out, nor is there water in the oil. Could this be the heater core???

did you change the T-Stat ? if you did the T-Stat is wedged inbetween the goose neck and the block ,makes for a BIG leak

futurr1 07-22-2011 04:39 PM

Had the same experience Yesterday. Was driving home and it just pegged the temp gauge. Shut it off and the belt was off. Put it back on and water is coming out of back off pump, it seems. Also when it started it was hard to start and wouldnt hardly run. Will be digging in this weekend.


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