mattman396
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BigMackTrucks.com is a support forum for antique, classic and modern Mack Trucks! The forum is owned and maintained by Watt's Truck Center, Inc. an independent, full service Mack dealer. The forums are not affiliated with Mack Trucks, Inc.
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Coolant Pressure Issue.
in Engine and Transmission
Posted
we had a truck like this and after a bunch of times we finally got the egr cooler to leak it would only leak sometimes, also had problems with the water pump shaft seal pulling air in,