Cummins ISB

This topic contains 2 replies and was last updated by mark-parsons-2 8 years 4 months ago
December 19th, 2012 1:26am
Cummins ISB in a motorhome,came in with head gasket leaking at right front corner(by thermostat housing),and cooling system building [email protected] head gasket,and eng. still building cooling syst. PSI.,AND OVERHEATING.I know air compressor could still be a possability,although I removed air to compressor ,and system still built cooling syst.PSI.I have cleaned head thoroughly,and have found no cracks whatsoever.Any thoughts would be greatly appreciated.
December 19th, 2012 2:56am
Removed air to the compressor?. Magnaflux head for them tiny cracks, and check the deck for a warpage?
December 24th, 2012 12:57pm
Thanx for your input Tim.Turns out the air comp.had a blown head gasket.Lesson learned-next time connect the comp. coolant hoses together,run and check result.

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