Hi I have blue smoke from exhaust when accelerating , cant feel turbo boosting but can get up to motorway speed just not great power!. its a 1997 tdi avant 1.9 90bhp.

155000 miles on the clock i got it as a runaround till my other car is fixed. But would like to hang onto it as it drives pretty good other than not alot of poke and have to get a vacumn central locking pump.

maf? turbo?any suggestions ?

Thanks

Jonny