Lazy turbo !!

Submitted: Thursday, Dec 13, 2007 at 09:16

ThreadID: 52505 Views:2571 Replies:4 FollowUps:2

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Member -Signman

Had the annual 'major' service done on Troopy yesterday.
One of the jobs was to refit/replace the turbo hoses. (Turbo has been fitted for nearly 8 years). While the hose was off on, the mechanic noticed a build up of gunk and sprayed a few squirts of carby cleaner into the housing. Put it back together, started it up and- of course- smoked like a mushroom cloud.
When the smoke cleared- took it for a hard run, and wow- the difference was very noticeable.
Heaps more low down pick up, seems to spin freely at mid range, and revs out much sweeter.
No extra boost or any other adjustments made.

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Reply By: KSV. - Thursday, Dec 13, 2007 at 09:59

Thursday, Dec 13, 2007 at 09:59

Good info, thanks for hint.

Cheers
Serg

AnswerID: 276366

Reply By: ob - Thursday, Dec 13, 2007 at 10:17

Thursday, Dec 13, 2007 at 10:17

Hi Signman

Did the mechanic say what the gunk was? Could it be dirt bypassing the air cleaner element combining with oil leaking internally from turbo?

Cheers ob

AnswerID: 276371

Follow Up By: Member -Signman - Thursday, Dec 13, 2007 at 10:29

Thursday, Dec 13, 2007 at 10:29

Just a general build up- . Sorta like fluff in the navel- dunno where it comes from- just happens !!

FollowupID: 540280

Reply By: Peter 2 - Thursday, Dec 13, 2007 at 13:10

Thursday, Dec 13, 2007 at 13:10

I've found the same on various fuel injected petrol vehicles that are normally run on the crap that is sold as regular unleaded. After a while there is a buildup of gunk in the throttle body and a squirt of carby cleaner and a fang around the block results in a much smoother and better running engine.
Physically removing the throttle body and manually cleaning with a rag achieves the same result without the smoke screen.
Funnily enough when the same vehicles are run on premium unleaded there is no buildup and performance and fuel economy are much improved.

AnswerID: 276401

Reply By: Member - Hughesy (NSW) - Thursday, Dec 13, 2007 at 19:32

Thursday, Dec 13, 2007 at 19:32

G'Day Signman,

Haven't seen your setup but it could be from the breather that comes from the top cover. On every diesel I've had if you pulled the air intake hoses off on the intake side of the breather outlet there was always a greasy scum/film in the hoses.

Since I've fitted my turbo this breather line now plumbs in before the turbo....so all that oil vapour will get sucked straight into the turbo. Over 8 years and many kms it has too build up...???

I'll have to remember this for about 5 years time ;))

Thanks for the info mate.

AnswerID: 276473