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What are the chances that with a blown head gasket the fluid that gets into the cylinders cause the motor not to crank due to the pressure? And what are the chances of having a cracked block or head also?
Cosider this for whatever it's worth. I once saw a guys pour Rust Check down the cylinders of a siezed engine, left it for a day, came back started it up and drove it for over a year (and maybe longer, I moved) with no problem. Mind you it was a 265 inline chev. BUT?? What is the downside, if it works you've ought some time, if not you've lost the price of a couple of cans of Rust Check. Next question, who sells Rust Check now.
Here is their site: http://www.rustcheck.com/
Hope this helps, new engines are not cheap.