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Old 01-23-2004, 02:50 PM
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Biggarmike Biggarmike is offline
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I've found one little bug in the 4.6L which merits remembering: there are freeze plugs under the timing chains, which are steel from the factory. A lack of cooling system service or using improper coolant can cause them to leak, giving you all of the indications of a cracked head or blown headgasket. before you start a major teardown or junk the motor, pull the timing cover and have a look. (pressure test won't help you) The timing cover is surprisingly easy to remove and can save you big bucks and major labor.
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