Originally Posted by anmol_1990
engine overhaul is done after 1 lac KM , but yours is a diesel and i think the cost would be more than petrol engine.
Before expressing my view for thread starter ,
No anmol , there is no hard and fast rules for engine to be overhauled at 1L kms.
Engine can be run without overhaul for so many lacks of kms.
cars that i have seen in real
Lot of qualis run till 4L kms.
honda city have driven till 3L kms
A good maintained indica till 2.5L kms , a bad maintained indica till 90K
A perfect functioning of engine with best output has good compression.
other than this its termed as engine loosing compression , may be refered as back compression too , but i am not sure.
Compression failure may be due to lot of reason .
But main one is improperly maintained engine.
no regular oil change , no regular inspection etc adds to it Improper cooling by coolant , no coolant etc cause them. This is early stage of engine cease.
Common heals that are followed
May be in your case , the piston rings change is enough - anything can be said only after a close inspection.
Valve door adjustment
valve replacement .
engine flush and engine oil change.
and after this whole cooling system check .
Engine overhaul is need maximum only if it cease ,
But not necessary , an uneven block wear , lines in block also need a over haul(In this case block and piston rings replacement is enough.)
check the connecting rod bearing etc too.
Also check is the air filter and the air passage are all sealed and in good condition , this one too may be root cause .