I HAVE A REBUILT 5

  • Tiny
  • Anonymous
  • 2005 Dodge Ram

I have a rebuilt 5.9 cummins and it blows frost plug when I step on it hard. Wondering what is cause.

Saturday, March 16th, 2013 AT 2:02 AM

1 Reply

  • Tiny
  • mhpautos
  • Expert
  • 30,588 posts

The core plugs are normally a very tight fit, so first I would ensure that the correct plug size is fitted, if you had a compression leak into the block with enough force to blow a core plug, I wold expect hoses to fail as well, and I would expect a misfire as well, normal cooling system pressure would not be enough to pop a plug it self under any circumstances, so ensure correct plugs are installed first.

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Saturday, March 16th, 2013 AT 3:12 AM

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