PO266 and puking oil

mudder500

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Friends truck is throwing these codes. Its not leaking oil unless under pressure and coming from just above oil pan gasket or might be oil pan gasket on right side of motor. Figure the injector is out but cant figure the oil out unless its a cracked piston. No obvious signs of coolent usage or mixing fluids.
Recently installed h&s mini max, dpf delete and a full egr delete. He was pulling a camper when this all started happening.

Anyway to test to c what it could b right off?? I looked under truck and cant pin point the oil leak exact spot.
 

mortal798

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Clean the block with brake cleaner. Put flourescent dye in the oil and look at it with a black light. You can buy LED black lights pretty cheap. That will tell you exactly where the oil is coming from.
 

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