Turbo ques??

[will_c]

in addition to what jay has said, i would also be checking the intercooler and related pipework for boost leaks as it can cause similar enough symptoms ie smoking and spluttering under boost. i would get the cooling system pressure tested, do a compression test, and test the intercooler for leaks also.


also whip out your spark plugs and let us know what colour each plug for which cylinder is that can be helpful in the diagnosis

[Dunnedriftin]

would also be checking the intercooler and related pipework for boost leaks

X2, take of the intercooler and check the pipework fully! hapened one of the lads he had a boost leak and the car was driving dog rough!

But with regards to white smoke thats the HG (head gasket) to my knowledge, as oil is normally a bluey tint in the smoke...

[Jay Rockett]

If its a boost leak it wont boost feck all really, have you a boost gauge??

Should get dark smoke if its boost related..


And does it only splutter sometimes on boost?

[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?