I helped my mum get a car yesterday, similar to mine - same engine a 1.7 td isuzu engine vauxhall astra. Our is an older model but the engine is good and powerful. I let my mum test drive it and we looked at the engine which didnt look as good as ours. But it drove fine so my mum took it. We went back later that night and i drove it home, having the same car i knew the engine, the turbo does not seem to be kicking in. Have i helped my mum buy a lemon or is it a fixable thing, it does need a service and im hoping this will help sort it.