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it sounds bad.you might want to change the o-rings on the ipr valve too,if there old.
what the icp is for is to tell the pcm what oil pressure is in the oil rail to feed the injectors.
and the ipr is the valve to feed the oil to the oil rail they work hand in hand to feed the right psi and
the right amount of oil to feed the injectors.
Last edited by outlawdiesel; 11-24-2008 at 08:51 PM.