"turbos smokes a bit after full load"

Muffin` · 9 Oct 2009 at 08:37

What can this mean?

<-noob

howler · 9 Oct 2009 at 08:39

guessing it means it chucks out some smoke after coming off full boost

probably seals are knackered

bledd · 9 Oct 2009 at 08:39

I'd read that as, after giving it some welly, some white smoke comes out of the exhaust..

Muffin` · 9 Oct 2009 at 08:40

howler said:
probably seals are knackered

that's the kind of info im looking for thanks

Matt82 · 9 Oct 2009 at 08:40

mine had some white smoke, it was cos of the gayer dump valve confusing the ecu

Joe T · 9 Oct 2009 at 08:41

Might depend on the colour of the smoke?

Muffin` · 9 Oct 2009 at 08:44

Joe T said:
Might depend on the colour of the smoke?

that's a good point, I'll have to enquire about that

Blue smoke = Turbo?

grey smoke = seal issue?

black smoke = running a little rich? :eek:

panthro · 9 Oct 2009 at 09:06

Blue(ish) smoke can mean turbo seals too, as the oil is leaking through them and ends up getting burnt.
My old Fiat Coupe had a turbo seal problem after I removed the cat as there was not enough back-pressure to keep the seals tight. Had to put the cat back on to stop plumes of smoke billowing out of the exhaust after leaving to idle for a few minutes.

Muffin` · 9 Oct 2009 at 09:40

Can the seals be fixed on a turbo? Is it finacially viable on an old car?

jamief · 9 Oct 2009 at 09:44

White - coolant?
Blue - oil?
Black - carbon (overfuelling?)

gurusan · 9 Oct 2009 at 09:48

Muffin` said:
Can the seals be fixed on a turbo? Is it finacially viable on an old car?

yup of course, can be done with a full rebuild. No clue what it costs here but for a full rebuild + balancing in the states I paid 150usd

or you can go to a junkyard and find a spare working turbo...

howler · 9 Oct 2009 at 09:58

Turbo rebuilds are usually pretty pricey

What turbo is it and from what car?

Muffin` · 9 Oct 2009 at 10:03

BBR trbo on a '92 MX5

panthro · 9 Oct 2009 at 10:32

Muffin` said:
BBR trbo on a '92 MX5

If its easily accessible, just whip the turbo off yourself and send it away to a reputable company like Turbo Technics, etc and they will do an exchange on a fully refurbished turbo.

Firestar_3x · 9 Oct 2009 at 10:34

How much is the car up for?

[TW]Fox · 9 Oct 2009 at 10:39

Do you not mean 'under' full load?

Matt82 · 9 Oct 2009 at 11:02

why? on/under full load is one thing, ie the engine experiencing full load. after full load is another different thing, ie once the driver is off the throttle

agw_01 · 9 Oct 2009 at 11:02

The pressure while under power can keep the oil where it needs to be (behind the seals). Come off the power and this reduces the pressure in the exhaust allowing the seals to weep.

Had it on my old turbo before I swapped it. Lots and lots of smoke while idling/driving normally, but none on full boost.

[TW]Fox · 9 Oct 2009 at 11:06

Matt82 said:
why?

Because I'm pretty sure the advert said 'under full load' not 'after full load'.

Edit; Just checked, I am wrong

Firestar_3x · 9 Oct 2009 at 11:07

agw_01 said:
The pressure while under power can keep the oil where it needs to be (behind the seals). Come off the power and this reduces the pressure in the exhaust allowing the seals to weep.

Had it on my old turbo before I swapped it. Lots and lots of smoke while idling/driving normally, but none on full boost.

Yea same happened to my old turbo, wasn't till after boost that it would smoke.