6.7 cummins boost drop

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04-18-2014, 05:14 PM

clay952

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6.7 cummins boost drop

HELP! i have a 2007 6.7 cummins full deletes with a smarty jr.
when i go full throttle it will boost to 35psi then suddenly drop to 25psi. is this normal? or is there something wrong?

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04-19-2014, 09:44 PM

coors_man_2005

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Have you checked all of your boost tube clamps making sure there tight. It shouldn't loose 10 psi really quick now it will spike up then loose a few #'s. Both mine do this

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