Sorry it,s not an Audi,but it,s definately a classic.

1900(I think)TD Astra 1997year,it,s my Brother's.
I know there are some excellent mechanics(CREEP,CREEP

)on here,I don,t know anything about turbo,s,let alone diesel turbo,s.Could someone help PLEASE.
Cars done about 190,000 mile.He put it into a garage in Germany,to have a new cam belt put on and an oil change.After that,every so often the engine would all of a sudden rev very high(lots of smoke) and doesn,t stop even if you switch the ignition off

.Only way to stop it,is to stall it.(Not a sticking throttle cable)
Lately it,s been doing it more frequent.Now everytime he starts it,it does it ALL the time.
Don,t know anything about TD,s.
Could the wrong engine oil(as in synthetic)cause this,or could it be the turbo?Or both??
Thanks,Karl.
