Turbo ques??

[Death Magnetic]

Its very hard to give a defo answer when your not looking at the prob in person.
But i'd go with Jay.
check the water for the rainbow effect, Or the oil on the dipstick should give it away.
but the comp test is your best bet.

[Scamper]

Update:
Got the compression test done today and she read 155psi in all cylinders, im delighted, also got the engine fully checked and mechanic said its perfect, so we went at the turbo and low and behold i was right, there was play in it, its wanked!
Glad i know wats wrong now, so i can get it sorted, thanks for all the help lads!

[Jay Rockett]

Good stuff, glad you figured it out!

Just wondering though as you had said alot of white smoke, did the mechanic give any explaination for that?