NEXON

1.5L REVOTORQ ENGINE



Back to back swap test with a new

turbocharger

After all the diagnostic, and if nothing wrong is

found, it may be recommended to test with a new

turbocharger and decide on turbo replacement.

ii.

Excessive Engine Oil Consumption

High engine oil consumption may also

lead to overhauling of the engine but before

proceeding to overhauling, check following points:



Make sure that there is absolutely no external

oil leakage i.e. from the camshaft oil seal,

crankshaft oil seal, oil sump gasket, oil pump

gasket, cylinder head cover gasket,

turbocharger oil feeder and return lines etc.



Ensure that the oil separator in the cylinder

head cover is properly mounted.



If no external leakage is found, determine the

exact engine oil consumption, as per following

procedure.

Determining Exact Engine Oil Consumption

! CAUTION

Do not make a rough estimate of engine oil

consumption by noting the kilometers covered by

the vehicle at any random stage and finding oil

consumed from the topped up position taking into

consideration dipstick level and oil sump capacity.

NOTE



Using a weight, grade, or brand of engine oil

other than recommended by TATA Motors may

increase engine oil consumption and/or

promote engine wear.



Determining oil loss by means of visually

checking oil level on the dipstick is inaccurate

PROCEDURE

1. Once it is doubted that engine oil

consumption is higher, place the vehicle on a

level ground.

2. Ensure oil level in dipstick in its max position.

3. Warm up the engine so that oil temperature is

75º- 80º C

4. Take a clean vessel; place it below the drain

plug of oil sump.

5. Drain the hot oil into the clean vessel. Drain it

fully.

6. Screw in oil sump drain plug and tighten it.

7. Weigh the vessel along with oil. Let this

weight be ‘w1’ gms.

8. Refill the weighed oil into the oil sump. Do not

spill any oil. The vessel used for draining

should not be used for any other purposes.

9. Drive the vehicle approx.

200 - 300 km

. This

drive should include at least

30 - 40 kms

. of

highway or similar road, vehicle running at

about 60 kmph.

10. Let this drive distance be ‘D’ kms.

11. Immediately after the test drive, place the

vehicle at the same spot from where it started.

12. Place the same previously used vessel below

the Oil sump.

13. Unscrew the drain plug and drain off oil into

the vessel. Drain the sump fully.

14. Weigh the vessel along with oil, now for the

second time. Let this weight be ‘w2’ gms.

Find out standard oil consumption as follows:

If the engine oil consumption is more than

0.2 liter

per

1000 kilometers

then it can be treated as high

engine oil consumption and the engine can be

taken for further investigation.