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1.5L REVOTORQ ENGINE
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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.