Blowing Water out of the radiator

cliffstark

New Member
Jul 30, 2011
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Ii have a 92 supercharged 5.0 and for some reason, after it warms up good, it will blow water out of the radiator and overflow. Enough to cause it to overheat. I replaced the radiator cap but that didn't do a think. Do you think the heads or gaskets are out? It seems to just blow water all (and antifreeze) under the hood.
 
Um, does the coolant smell of fuel at all? I can understand it getting warmer under boost, but mine never spat coolant...if it does you might (probably) have a head gasket leaking. Have you checked your plugs at all? Is it consuming any coolant or mixing it with the oil?


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Before you get too far involved, do yourself a favor and change your thermostat. They're cheap and you could probably swap one for under $10. After that, do a good job of burping the cooling system. Get the front end up in the air as high as you can, so the radiator fill is the highest point in your cooling system. Let it come up to operating temp with the cap off and the coolant level should drop once the thermostat opens. Start adding until you can't get any more into the radiator, then start squeezing the upper hose, to work any air pockets out of the engine and to the radiator. Count on spending five or ten minutes just doing this task. Once you're confident that you've gotten all of the air out and te system is topped off, replace the cap and then report back. It could very well just be air in the system and not gaskets.
 
Hmm, my new business idea: Betting on the advice in forums!
My company, like ebay, will take 10%.
But screw that, I could become rich just by betting in the tech forums. :)

IMHO, one or both head gaskets are history. Have fun screwing around with other cr*p.
More importantly, **WHY** did you blow one/both head gaskets? Just replacing them is likely a waste of time.

Bet #2: The EEC/timing/etc are not properly setup for your supercharger and add-ons.

Yes, I am psychotic. Or is that psychic? Hmm, you decide.
Hey, about another bet? ;)
 
I actually removed the thermostat a while back. I do have to keep putting antifreeze in it as it all blows out everywhere. I can't smell any fuel in the water. I purchased it with the supercharger so not sure what it did before. It runs extremely well which makes me wonder about the gaskets. I have seen the check engine light come on at times as well. I never see water leaks on the garage floor after parking.
Thanks