The intake manifold gaskets may leak. Coolant loss may be noticed as coolant leaks into the engine oil and/or there may be a rough idle or whistling noise. The intake gaskets need to be replaced if they are leaking coolant internally to prevent engine damage.
Intake manifold may leak vacuum or coolant on Dodge Ram 2500
Average mileage: (–)
Engine affected: 8.0L V10
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On 3.9L V6 and 5.9L V8 engines, the intake manifold gasket may leak and cause increased oil co...
cleaned drain thru firewall, but still have leak around firewall on inside of cab.
...ating can result from coolant leaks which are commonly found at the thermostat housing gasket, water pump, heater return tube O-ring at the water pump, intake manifold gasket, and timing cover gasket....