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- - 3306 cat (https://www.dieseltruckresource.com/forums/general-diesel-discussion-92/3306-cat-332236/)

michael sims

07-07-2019 02:51 PM

3306 cat

: I have a 3306 I top off coolant it blows out 2 gallons but don’t overheat steam comes out of overflow is that a head gasket problem

Fordzilla

07-07-2019 04:51 PM

A test with an electronic sniffer for combustion gas in the radiator should answer that question...:confused:...Ben

AlpineRAM

07-08-2019 03:50 PM

You can also use ph test strips on the coolant- take a reading from fresh coolant and compare with used coolant at low hours- more acidic usually tells you that CO2 is getting into the coolant.

On the Cats I saw some bad T-Stats overheating the engine in the head, the steam in the head pushed the coolant out of the overflow, while the temp gauge read low..

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