KRYOTEC ENGINE 13 CONDITION POSSIBLE CAUSES CORRECTION OIL PUMPING AT RINGS 1. Worn or damaged rings. 1. Hone cylinder bores and replace rings (Refer to Engine/ Engine Block/Bearings, Piston- Standard Procedure). 2. Carbon in Oil ring slots. 2. Replace rings (Refer to Engine/ Engine Block/ Rod, Piston and Connecting - Removal). 3. Worn valve guides. 3. Replace cylinder heads (Refer to Engine/ Cylinder Head Removal). 4. Leaking valve guide seals. 4. Replace valve guide seals (Refer to Engine/ Cylinder Head/ Seal, Valve Guide - Removal).
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