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779 Posts
pull the ipr valve out and see if the screen has been damaged or has a hole in it. usually what happens is when you have the oil cooler out, debris falls into the oil reservoir and as soon as you start cranking on it, the debris goes straight to the pump/ipr valve and wipes out the ipr. also just because it says 84% ipr duty cycle, doesnt mean the ipr is actually closing.
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