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I just rebuilt the motor and now I have a problem ............ The truck runs like a champ for about 7-10 miles then i pop up code 1690 and it starts cuttin out just a little im tracin wires but I need to know where on the ECM plug terminal 18 is?!??! thanks

OK, i was racing my roommate I hit the speedlimiter and let out then i heard a knockin noise from the engine bay. The knock progresses with acceleration. i pulled the valve cover and i know its not a valve or rocker or bridge i have not pulled the pushrods yet please send me a direction. i have...