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Hello Fellas> This Truck Coming To Shop With Excesive Smoke , Smell Diesel At Tail Pipe, When Test Drive I Heard Engine Detonation, No Check Engine Light> Scan For Codes Show Code P0089 ( Excesive Inyector Rail Pressure) I Replace Press Regulator And Cts , And Still Havin A Lot Smoke, If You Let Truck Idling For A While When Take Off Leave A Cloud On Road.
Back In Feb This Year We Have A Problem Mixing Diesel With Oil , We Replace All Inyectors And Been Find Until Now. Please I Need Help , Thanks To Every One . Robert
 

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Kinda sounds like bad injectors again, could be a bad regulator but i doubt it! IS this truck modified in any way?
 

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Sounds like injectors.
 
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