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Turbo Swap #1624575
31/08/2018 15:04
31/08/2018 15:04
Joined: Mar 2006
Posts: 8,660
Cambridge & Cotswolds
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MeanRedSpider Offline OP
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MeanRedSpider  Offline OP
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Joined: Mar 2006
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Cambridge & Cotswolds
There’s a suggestion that I need a new turbo on the old E Class.

The only symptom is some smoke. However, I don’t seem to be using much/any oil which I’d expect if the turbo was the cause. Is that a fair assumption?

If it’s the turbo, what sort of job is a turbo replacement for an accomplished DIYer? I’m told access is pretty easy on the W211 3 litre diesel.

Re: Turbo Swap [Re: MeanRedSpider] #1624636
03/09/2018 11:46
03/09/2018 11:46
Joined: Jan 2006
Posts: 9,868
SW London
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How was it diagnosed?

If you leave on idle for 10 mins do you get any blue smoke?

if you can get the Intercooler pipework off - check it was oil residue, and also the shaft on the turbo for lateral play.

Only takes a few drops of oil to smoke quite a lot...


Rotary fun - 370 bhp per ton. GT30's are small you know?!??!?!?!
Re: Turbo Swap [Re: MeanRedSpider] #1624674
04/09/2018 15:26
04/09/2018 15:26
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Cambridge & Cotswolds
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MeanRedSpider Offline OP
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MeanRedSpider  Offline OP
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Joined: Mar 2006
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Thanks. Yup - it’s just the spot residues above the two exhausts. I don’t want to swap the turbo if it’s not necessary

Re: Turbo Swap [Re: MeanRedSpider] #1624891
11/09/2018 09:59
11/09/2018 09:59
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did you do the idle for 10 mins test?


Rotary fun - 370 bhp per ton. GT30's are small you know?!??!?!?!
Re: Turbo Swap [Re: MeanRedSpider] #1624903
11/09/2018 18:31
11/09/2018 18:31
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Cambridge & Cotswolds
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MeanRedSpider Offline OP
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MeanRedSpider  Offline OP
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Joined: Mar 2006
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Cambridge & Cotswolds
No - what’s that?

If it does idle a while, there tends to be white smoke. The specialist (who hasn’t seen it himself yet) wonders if it might be a leaking injector. The white smoke is probably diesel.

Re: Turbo Swap [Re: MeanRedSpider] #1624928
12/09/2018 11:54
12/09/2018 11:54
Joined: Jan 2006
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If turbo oil seals are leaking, then it'll drip into the exhaust at idle if left for a while, result is blue / black smoke out the back, not white.

white smoke is either water, or unburnt diesel - injector or low compression possible.


Rotary fun - 370 bhp per ton. GT30's are small you know?!??!?!?!
Re: Turbo Swap [Re: MeanRedSpider] #1624935
12/09/2018 15:50
12/09/2018 15:50
Joined: Mar 2006
Posts: 8,660
Cambridge & Cotswolds
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MeanRedSpider Offline OP
Je suis un Coupé
MeanRedSpider  Offline OP
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Joined: Mar 2006
Posts: 8,660
Cambridge & Cotswolds
It’s not using water - suspect the dripping injector as I think that also leads to a sooty exhaust when running and there is some soot


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