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Hi I have 1990 mazda b-2200 series truck and the engine has an-freeze in the fourth piston and I do not know why can you please tell why or some thing to look at or something to do about it thank you. Michael Customer (name blocked for privacy) my e-mail is michael_cloudd2000@yahoo.com. bye.
That is caused by a bad head gasket or cracked cylinder head.
You have to remove the cylinder head and have it pressure checked and replace the head gasket.
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