Download Some F-Super Duty vehicles equipped with the 6.4L diesel may exhibit one or more of the following concerns: lacks power, leaks oil, fuel or coolant from the tail pipe, abnormal tailpipe sediment, white smoke or ash, exhaust smell, knock or rattle, elevated idle, surge, crankcase oil level over-full, MIL On, DTC’s P0087, P2291, P0263-P0284, P0300-P0308, P1336, P132B, P2262, P2263, P244C or P244D. ACTION To diagnose and correct the concern, refer to the following Service Procedure. SERVICE PROCEDURE NOTE DO NOT START ENGINE Evaluation, Inspections, And Checks 1. Retrieve KOEO diagnostic trouble codes (DTCs). 2. Check oil level. Remove and clean dipstick. Reinsert into dipstick tube only until dipstick handle reaches top of dipstick tube (Figure 1). NOTE Figure 1 – Article 07-8-9 3. Check coolant level.