Hi i have a 2000 estima van, 3000cc just been serviced and is blowing alot of blue smoke especially under load? only done 92000 kms.

What is the problem if i start my car if its cold and it smokes blue white smoke but if engin is hot it stops smoking but valve tem seals have been done and there is no play on pistons

Blue smoke is oil burning. You may have a bad seal in the turbo sucking oil into the intake stream.

mechanics fix things I have no idea what a "machiance" does
if you want help then at least include the compression readings
when is it blowing smoke
how much oil is it using
is the sump oil level correct
what viscosity oil are you using
comment with the details and maybe I can point you in the right direction

Well, it could be the turbo gone bad. Blue smoke is oil in the combustion. It could be broken pistons or something else expensive. Did it make any sounds when it died?

i believe the engine is running too lean as if it was running too rich it would blow black smoke If it was blue smoke it is oil related eg valve stem seals,valve guides and or piston rings all of these things will create blue smoke if one of the above is worn out

firstly change oil every 6000kms and a oil filter every third oil, change ,blue smoke is a sign of oil consumption whitish gray is a sign of excess fuel from worn injection system .How many miles does this vehicle have on it ? Could the valve guides need new seals and the valve cleaned and re-lapped in .then maybe new piston rings ,.Also use the cheapest oil for a diesel you find from a supermarket using expensive long life oils can cause the engine to build up too much carbon clag inside the the engine so cheap oil, and change it often is my advice ,but without a look under the bonnet myself i couldnt even think of whats wrong

check your anarobic switch

its not worth fixing

New spark plugs, fuel filter, air filter.  A spark plug flex socket with both 6" and 9" extensions are a necessity.

Blue smoke is oil, probably a sign of worn rings, has it done quite high mileage?