ronp wrote:

So could it well be compressing ie sucking itself in ?

zarnd wrote:

If it sucks itself in then it could be because of a knackered turbo or a severely blocked air filter. Knackered turbo could also stop it starting too

cheers

First time I've heard of that I've seen turbos where the impeller has shattered and send shards throught the intercooler and even ended up in cylinders, but the engine has started. If it was an electrical fault on the turbo then the MIL would show a warning, but Ronp said there were no warnings. Likewise, in my experience a blocked air filter would not stop an engine starting.