Engine Oil Debris

When dealing with a motor that has experienced an internal failure, it is incredibly important to ensure that all internal components are completely cleaned before putting the motor back together.  Closely inspect all parts that are lubricated or use pressurized oil for debris.  If any contaminants from the failure arent cleaned out, they can quickly lead to repeat failure.

Oil Filter - If you suspect that the motor has internal failure, start by cutting open the oil filter to see what's inside.  And, remember, when debris blocks the material inside the filter, the bypass valve will be forced open, allowing any contamination in the oil to be circulated through the motor.  If the oil filter has large amounts of debris accumulation, you will need to inspect all of the internally lubricated parts carefully.

Oil Pan - Since wet-sump oil systems return pressurized oil back to the oil pan, much of the debris material from an internal failure will accumulate in the oil pan.  To clean the oil pan properly, you must remove it from the midsection and disassemble it.  To ensure that all of the material is removed, use contact cleaner (remember to wear eye protection) and clean paper towels to clean the oil pan; parts washers and solvent tanks rarely remove all of the material.  Also, make sure to order a new oil strainer.

Variable Camshaft Timing (VCT) pulleys and the Oil Control Valves (OCV) - Inspect control vavles to ensure that they are free of debris and operate correctly.  If there is debris present in the OCV filter when you remove the valve, remove and replace the VCT pulleys - they are not servicable and parts are not available or them.  There are very small passages inside them that can trap foreign material and affect the proper operation of the VCT pulley, compromising engine performance.