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Repair Manual MAN-00
190
THAR
CRDe
BS-IV
MAY
2012
/Rev 1
The repair methods given by the manufacturer in this document are based on the technical specifications, current at the time of release. The methods may be modified as a result of changes introduced by the
manufacturer in the production of the various component units and accessories from which the vehicles are manufactured. The reproduction, translation, transmission, in part of or whole of the present
document, are prohibited without the prior written consent of Mahindra & Mahindra Ltd. The use of this document by any person other than the trained personnel, at the Authorized Service Centre of
Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for penalty/prosecution© 2012 Mahindra & Mahindra Ltd.
Trouble Shooting
Symptom
Causes
Remedial action
Engine does not give full
power.
1.
Gas leak between EGR pipe
joints.
2.
EGR pipe leak.
3.
EGR valve improper
functioning.
4.
Vacuum hose crack, loose,
fallen off
Change the gasket or the hose.
Change the pipe.
Check the EGR using the blink
codes. Proceed appropriately.
Ensure vacuum connections at
vacuum modulator, reservoir,
and alternator.
Noisy engine & high
smoke
1.
Cylinder head gasket
defective.
2.
Worn out or damaged valve
seats.
3.
Leaking injector pipe/ HP
pipe.
4.
Leakage at EGR Valve flange
face, exhaust manifold and
EGR pipe end.
Replace the cylinder head gasket.
Lap the valve seats or regrind.
Tighten the injector pipe.
Confirm & check
-Gasket condition
- Bolt torque.
Black smoke.
1.
EGR valve stuck open
Check the EGR valve-
physically.
Excessive oil
consumption
1.
Cracked vacuum line hoses
2.
Restriction in crankcase
breather.
3.
Damaged oil separator
4.
Bend/kink in any of the oil
return pipe’s/vacuum hoses.
Check the vacuum line from the
Pump to the EGR valve - check
for leaks, crack. Replace cracked
hoses.
Locate & remove restriction.
Check the crankcase ventilation
& rectify.
Replace the oil separator
Change the vacuum hoses.
Remove the bend or kinks.
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