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Do I have a cracked block

(1990 Ford Ranger)
in Poquoson, VA on February 01, 2011
My son was driving my truck down the road and all of a sudden a bunch of white smoke came out the back.
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on February 01, 2011
It would be very unlikely that you would have a cracked block.

White smoke -- basically what you need to do is determine if there is an internal engine coolant leak - check the oil - is it overfull and milkly? Smoke could be from oil burning - this is usually bluer than white.

Does your coolant smell like exhaust fumes? That can be a good basic check to see if there is an internal engine coolant leak...
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on March 19, 2011
Maybe just a head gasket break. A compression check should give you an idea of which cylinder it is affecting. Either replace the head gasket or use one of the sealants available at your nearby auto store. These sealants can also "fix" a cracked block. You can check out these different sealants on the web.
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