SAFARI BSVI SERVICE MANUAL

KRYOTEC ENGINE 65 OIL CONSUMPTION TEST AND DIAGNOSIS The following diagnostic procedures are used to determine the source of excessive internal oil Consumption, these procedures and tests apply to vehicles with 50,000 miles or less. NOTE Engine oil consumption may be greater than normal during engine break-in. Repairs should be delayed until vehicle has been driven at least 7,500 miles. Severe service (high ambient temperature, short trips, heavy loading, trailer towing, off-road, or law enforcement use) may result in greater oil consumption than normal. Sustained high speed driving and high engine RPM operation may result in increased oil consumption. Failure to comply with the recommended oil type and viscosity rating, as outlined in the owner's manual, may impact oil economy as well as fuel economy. Oil consumption may increase with vehicle age and mileage due to normal engine wear. NOTE Because a few drops of external oil leakage per mile can quickly account for the loss of one quart of oil in a few hundred miles, ensure no external engine oil leaks are present. • Oil leakage is not the same as oil consumption and all external leakage must be eliminated before any action can be taken to verify and/or correct oil consumption complaints. • Verify that the engine has the correct oil level dipstick and dipstick tube installed. • Verify that the engine is not being run in an overfilled condition. Check the oil level 15 minutes after a hot shutdown with the vehicle parked on a level surface. In no case should the level be above MAX or the FULL mark on the dipstick. OIL CONSUMPTION TEST 1. Check the oil level at least 15 minutes after a hot shutdown. 2. If the oil level is low, top off with the proper viscosity and API service level engine oil. Add one bottle of MOPAR® 4-In-1 Leak Detection Dye into the engine oil. 3. Tamper proof the oil pan drain plug, oil filter, dipstick and oil fill cap. 4. Record the vehicle mileage. 5. Instruct the customer to drive the vehicle as usual. 6. Ask the customer to return to the servicing dealer after accumulating 800 km., Check the oil level at least 15 minutes after a hot shut down. If the oil level is half way between the "FULL" and "ADD" mark continue with the next step. 7. Using a black light, re-check for any external engine oil leaks, repair as necessary, if no external engine oil leaks are present, continue with oil consumption diagnosis. OIL CONSUMPTION DIAGNOSIS 1. Perform a cylinder compression test and cylinder leak down test using the standard leak down gauge following manufacturers suggested best practices. 2. If one or more cylinders have more than 15% leak down further engine tear down and inspection will be required. 3. If the compression is good it can be assumed the valve guide seals or valve guides are at fault. TOP 18 REASONS THAT MAY LEAD TO ENGINE OIL CONSUMPTION 1. Tapered and Out-of-Round Cylinders The increased piston clearances permit the pistons to rock in the worn cylinders. While tilted momentarily, an abnormally large volume of oil is permitted to enter on one side of the piston. The rings, also tilted in the cylinder, permit oil to enter on one side. Upon reversal of the piston on each stroke, some of this oil is passed into the combustion chamber. 2. Distorted Cylinders This may be caused by unequal heat distribution or unequal tightening of cylinder head bolts. This condition presents a surface which the rings may not be able to follow completely. In this case, there may be areas where the rings will not remove all of the excess oil. When combustion takes place, this oil will be burned and cause high oil consumption. 3. Improper operation of "Closed Crankcase Ventilation (CCV)" system The main purpose of the Closed Crankcase Ventilation (CCV) is to recirculate blow-by gases back from the crankcase area through the engine to consume unburned hydrocarbons. The system uses a filter, tubing, and rubber hoses that route crankcase blow by gases to the intake manifold. Vacuum within the engine intake manifold pulls the blow by gases out of the crankcase into the combustion chamber along with the regular intake air and fuel mixture. The CCV system can become clogged with sludge and varnish deposits and trap blow by