Drive the vehicle for approximately 200 or 300 11. km. A minimum of 30 - 40 km should be on a highway or other road where a speed of 60 km/h can be maintained. Record the distance travelled (D). Return the vehicle to the exact location the oil 12. was previously drained from the engine. Wait for few minutes to cool down the oil. 13. Drain the oil from the engine into the container 14. used to originally weigh the oil. Allow the oil to drain completely and use care not to spill any oil, as this will adversely affects the test results. Weigh and record the weight of the oil (W2). 15. Calculate and compare oil consumption. 16. a. Determine the amount of oil consumed (W3) by subtracting the weight of oil after the drive from the original oil weight (W1W2). b. Divide the oil consumed by the specific gravity of oil to determine the volume of oil consumed, in milliliters (W3 / 0.88 = C a ml) c. Divide the volume of oil consumed by the distance traveled to determine the volume of oil consumed per kilometer (C ml by D). d. Multiply by 1000 to determine the amount of oil consumed every 1000 km. e. Compare the actual oil consumed with the standard oil consumption. III. ENGINE OIL PRESSURE TEST DESCRIPTION If suspecting the oil pressure of being inadequate or a faulty oil pressure transducer, the pressure can be checked by removing the oil pressure transducer and connecting a gauge directly to the engine head. PROCEDURE 1. Park the vehicle on a flat surface and engage the parking brake. 2. Check that the oil level is at the ‘MAX’ mark on the engine oil dipstick. Add oil as necessary. 3. Verify that the right grade weight of oil is used. 4. Inspect the engine thoroughly for signs of external leaks through the cylinder head cover seal, crankshaft main seals, camshaft seal, oil sump gasket, oil pump sealant, oil sump drain plug, etc. Repair any external leaks. 5.Disconnect the oil pressure transducer, electrical connection. Remove the oil pressure transducer from the engine. 6. Install a pressure gauge in the oil pressure transducer port. 7. Place the vehicle in neutral and start the engine. Allow the engine to warm up to normal operating temperature (approx.80°C). 8. Read the oil pressure indicated on the gauge at idle and at maximum engine speed. Calculation W1 - W2 = W3 Divide W3 by 0.88 gm/cm3 = Caml Divide Ca ml by D Multiply by 1000 Solution Milliliters consumed per 1000 km ENGINE SPEED PRESSURE (BAR) Idle (at 1000rpm) >0.9 Maximum (Red line) (at 5700 rpm) >4 Petrol Engine Ph-2 (CAFÉ) 55
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