2002 blazer has massive leak of water(coolant) from the rear of the engine. if i put the hose in the radiator and fill it up the leaking starts EVEN WITHOUT the engine running. I cant see where its comming from.......help please.... if it is the lower manifold gasket...how much would that cost to have done....cause I can only drive it... im definately not a mechanic.....any suggestions???

 

what about sodium silicate? does it fix big leaks like what I'm talking? Has anyone used that before?

 

I will vote against any type of leak stop, does more harm then good in my opinion. If the leak is so bad, you should be able to see it pouring out, get someone to look while you pour.

 

check for a busted frost plug, that'll be your cheapest fix.

and I second no stopleak. You're just throwing money at a temporary fix that'll cost ya more dough.

 

lower intake manifold gasket possibly

 

seems like a similar situation the reason my blazer is sitting in garage. Fluid was leaking from back of engine, at first I thought was oil leak because its the same color. Till I notice that I was getting cold air and temp. guage was going above normal, but didn't get as far as the red zone. Compared to what you did with putting a hose, which I presume it was water, I couldn't do that since when I discovered the problem, the Arctic vortex was coming upon us. Garage told me it was the lower intake manifold and Garage bill about $485 with 5 hours of labor. To do that work requires disassembly on top of the engine, which allows the mechanic to find more thing wrong, me, the distributor is going bad, another $250. And yeah, thats a mechanic I can trust, imagine it if you can't trust him.