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Old 07-22-2002, 10:42 AM
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Post SBC coolant spew

I have a 91 SBC with TBI. Recently my p.o.s. decided to spew coolant all over the road. To make a long story short, coolant is leaking from behind the crank pulley. I have already checked the freeze plugs, but they seem to be in good shape. What could it be? Bad crank seal in the front, or cracked block.....HELP!!! :o

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Old 07-22-2002, 01:17 PM
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Talking

could it just be the bottom of the water pump leaking and making its way down to the pulley?

JB
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Old 07-22-2002, 01:43 PM
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I agree with the first post. The waterpump has failed. The coolant drains down around the crank pully and then drops. Replace your waterpump and your problem is solved. During the process, check hoses, clamps and flush the block before adding new coolant/water. Good luck, Fastgo
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Old 07-22-2002, 10:01 PM
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Water pump is 3 months old and nothing is coming from underneath it, or behind. You can see above the crank pulley and nothing is dripping down, it is deffinitly originating from behind the pulley <img src="confused.gif" border="0">
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Old 07-22-2002, 10:54 PM
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Buggyman303: Water needs a source. Unless the block is cracked, the pump is the source. Was the pump new 3 months ago? A rebuild? Did you install it? Small block Chevy pumps are attached to the block with four bolts and a gasket on each side. Check the bolts and tighten any that are loose. Feel under the connections for moisture.If those check out, feel at the base of the pump after running the engine for moisture there. You might try putting a straight edge between the crank pully and the block. If you get moisture on top of the straight edge, it's from above. I'll say again, I think it's involving the water pump, new or not. I hope my suggestions help..Fastgo
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Old 07-23-2002, 05:45 AM
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well if u r sure its not the water pump, i would check too see if there is coolant in your oil (although unlikely). it could be the block is cracked comewhere and is leaking down and out at teh timing cover or something. thats probably nto ti though. jsut check for foaming in the oil ( i htink thats how u check if ther is coolant in the oil)

Jordan
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Old 07-23-2002, 10:58 AM
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It is the water pump, I can see it dripping down now. Thanks for your help!!
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