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Old 03-11-2008, 12:39 PM   #1
tahoefuz
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Default Blown head gasket?


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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?
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Old 03-11-2008, 01:18 PM   #2
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Chances are pretty good that a blown head gasket could allow coolant to enter cylinder and not to crank. Pull the plugs and check for wet. With the plugs out crank the engine over to clear coolant from cylinder. Put the plugs back in and crank while watching fluids in rad. You may well see evidence that compression is getting into the water jackets. As a rule of thumb (and all rules have exceptions) heads crack from overheating and blocks crack from freezing. Any history of either?
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Tom G.
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Old 03-11-2008, 03:34 PM   #3
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never over heated, never frozen. But there was an extreme amount of smoke coming out of the pipes just before the motor shut off. but still no over heating.
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Old 03-11-2008, 03:51 PM   #4
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White smoke? I'd do a compression test on each hole to determine which one (s) is the likely candidate. My guess would be a blown head gasket, but I would have a really good look at the head gasket when I got it out to make sure that it was the gasket and not the head. If I wasn't positive I would have the head magna fluxed or whatever to look for cracks. Changing head gaskets should keep you amused for a Saturday.
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Old 03-11-2008, 09:02 PM   #5
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Thanks for the input, I'm gonna pull the heads off tomorrow and do the gaskets. And I guess my best bet would be to just buy heads, or plan on having these refreshed.
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Old 03-11-2008, 10:44 PM   #6
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if so before u take the head off check ir intake manifold gasket those are known to leak, i had the same problem and just fixed it this weekend, and the smoke could be to much gas or coolant in the motor, check engine light on?
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Old 03-12-2008, 12:25 AM   #7
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Quote:
Originally Posted by tahoefuz View Post
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?
If the block never froze or overheated, odds are that you have a blown head gasket. How many miles are on the engine? It would be a good time to refresh the heads if your engine is tired.
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Old 03-13-2008, 03:21 PM   #8
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well, as it turns out, and this is my luck, the block is siezed, plugs are pulled and the motor won't go anywhere. time for a new motor. Thanks for the help anyway guys.
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Old 03-13-2008, 03:38 PM   #9
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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.
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Old 03-13-2008, 04:47 PM   #10
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thats a bummer man, should look into the gm's 383's haha
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