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What happens when pressure builds up in the expansion tank?? for the mp8 engine because that's what happening to the one I drive.


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  • Brooks changed the title to What happens when air goes in the expansion tank?? for the mp8 engine
  • Brooks changed the title to What happens when pressure builds up in the expansion tank?? for the mp8 engine because that's what happening to the one I drive.

how much pressure are we talking about,  there will always be pressure when the engine is hot..  is coolant coming out ?  

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On 3/25/2022 at 6:56 AM, Brooks said:

What happens when pressure builds up in to the expansion tank🤔 for the mp8 engine because that's what happening to one I drive

Sometimes the rad tank  cap can cause issues! the top rad tank had issues at one point Depends on the year of the truck!  Most common instance of this is caused by egr cooler failure less  common is injector cup failure sometimes accompanied by hard starting! sometimes the rad cap can cause issues

More comments will likely follow! 

Edited by fjh
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