LT1-LT4 Modifications 1993-97 Gen II Small Block V8

water leak

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Old 06-12-2011, 06:21 PM
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Default water leak

Putting water in the car today and did the whole bleeding procedure but with the EWP is it any different???? it stays below 210 but just leaks water when it gets some what up to temp and no idea where from all the hoses look good everything seems to be good car runs good and like said won't go over 210


Im stumped :/
Old 06-12-2011, 06:22 PM
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Gotta find the leak dude.
Old 06-12-2011, 06:25 PM
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Could be seal around the waterpump. Mine would heat up then it would just pour coolant straight down. Replaced Pump and Seals Fixed It for $85.

Cold Start in 3-5mins would start leaking.
Old 06-12-2011, 06:26 PM
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Every where I look is dry the old radiator that had a leak was replaced now its leaking from some where else hoses are all on there ive triple check I'll go at it with a clear head tomorrow. Car sounds great doesn't miss a lick its a great running set up from what it idles in the driveway.
Old 06-12-2011, 06:28 PM
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get the tool that pressurizes the coolant system with the car off. you will find the leak quickly. some common places are the back of the heads and the seal you made when mounting the EWP to the housing.
Old 06-12-2011, 06:29 PM
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Originally Posted by Lawhead
Every where I look is dry the old radiator that had a leak was replaced now its leaking from some where else hoses are all on there ive triple check I'll go at it with a clear head tomorrow. Car sounds great doesn't miss a lick its a great running set up from what it idles in the driveway.

Start it up and get under there and watch where it starts leaking from.

I did have leaking problem with the coolant crossover line that goes into back of head after replacing manifold gasket.
Old 06-12-2011, 06:51 PM
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Originally Posted by 1996firebirdformula
Start it up and get under there and watch where it starts leaking from.
That's far too easy. Just post online.
Old 06-12-2011, 07:18 PM
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its in the front on the passenger side almost like the cap but don't see nothing come out of the cap got dark on me so going to go out there with a clear head tomorrow and see where it gets me just with it being almost done I keep trying to rush things which isn't a good idea
Old 06-12-2011, 11:51 PM
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I bet you bumped your low coolant sensor with the battery.
Old 06-13-2011, 07:42 AM
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What is the level of your reservoir? Does it too show it's low? If not then you may have an air leak rather than a coolant leak. What I mean is air may be entering the return line between the reservoir and radiator. I'm sure as you know when coolant gets hot it will enter the reservoir and as it cools, will return to the radiator. If air is introduced into the return line from the reservoir it will stop coolant from returning. When you pop the radiator cap the radiator will be low.
If you've replaced your radiator with an aftermarket one from the likes of Autozone or equiv. the hose ports and such may be smaller. I did this and had to put screw type hose clamps on many of the ports due to them leaking. Found the coolant return line port for the reservoir to be smaller and the clamp was not sealing the hose which introduced air into the system as described above.
As suggested, get a coolant pressure tester and test when engine is cool. Don't go over 18psi.

Originally Posted by LSWHO
That's far too easy. Just post online.
Just starting a car and looking for a leak doesn't always work, street prep king genius. Sometimes a leak can be in a place where the coolant hits a hot spot and evaporates before it can be seen.
Old 06-13-2011, 08:54 AM
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Water is deff coming out of the reservoir everything is fine till it gets close to 210 then it starts spewing out. I was thinking maybe pump hooked up backwards? but not sure if thats even possible last i checked black was always ground and thats how i have it hooked up now
Old 06-13-2011, 08:58 AM
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Spewing out where? The reservoir cap? If so, check to make sure the lines from the steam pipe and reservoir are not mixed up. The reservoir line should be on the top port just below the radiator cap and the steam pipe line below the reservoir port/line.
Old 06-13-2011, 09:35 AM
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Pretty sure thats what it was went out there changed them around and tighted all the clamps again and no water and the temp wont get over 180!!! should be going tonight!!!

Never thought this day would come but

Thanks SS RRR



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