I did a complete overhaul (model 2008 189000 driven) with genuine engine parts
Bought from Toyota Walton
But assembled in my trusted mechanic
After completing running of 4000 kms
Mechanic tunned its tapet and timing etc
Car worked very strong and very efficient fuel millage
But after 6000kms i felt some times LITTLE missing and some Time STRONG missing between 20-60 speed (at fixed pedle car takes jerks not go smother) if you press pedel then stops jerking
a second issue is
The car in cold startup did strong thrilling and gives BLACK-white mix smoke for 2 to 3 minutes then automatically thrilling stops and smoke vanishes
All day car go strong . Above mentioned issue only happens in morning