I Need Help With This Problem, At First Startup In The Morning My Engine Stumbles , It Runs Smooth For About 90 Seconds Then Engine Darn Near Shuts Off But Catches And Runs Smooth , This Happends For About 4 Or 5 Times Then Runs Smooth, Little bit of Smoke When It Happends, It Seems To Happen When The Ambiant Temp Is At Or Below Freezing, I Have 125,000 Miles On The Engine, The Injector Pump Was Rebuilt About A Year Ago, It Has A Raycor Water Filter Seporator, I Also Have A Problem After I Change The Fuel Filters, I Fill The Filters With Fuel But It Runs For A Few Minutes Then Quits, I Crack The Injector Lines , Crank Over Till I Get Fuel Tighten Them And Start But It Runs A Short Time And Quits Again, Finaly It Gets It And I Dont Have A Problem Untill I Change Filters Again, I May Have To Do That 7 Or 8 Times Befor It Runs Proper.