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Motor prep

Old 12-15-16, 11:59 AM
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Motor prep

My motor recently went out on my second gen Mazda. So I went to the junkyard and was lucky enough to find one with good compression. Assuming it's been sitting for a few years is there anything I should do to prep the motor as far as putting some sort of lubricant in the spark plug ports and turning it by hand?
Old 12-15-16, 12:32 PM
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If the compression is good, as you say, then there's not much you need to do other than place some oil in the plug holes on each rotor and rotate by hand to distribute the oil before firing up the car.
Old 12-15-16, 02:42 PM
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May want to pressure test the coolant portion of the block also. It could have nice compression but still have a failed coolant seal.
Old 12-15-16, 04:52 PM
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Coolant seal test

How would i test the coolant seals?
Old 12-16-16, 02:13 PM
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Pressure test the coolant ports on the short block. Some people have made a block off plate with a nipple for the water pump housing ports on a short block to seal and pressure test with.


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