Black smoke

When excellerating hard ( From standstill normally )in my 98 XEDI i sometimes get a sudden and not to mention embarrasing loss of power followed by a massive plume of black smoke out the rear end ( the car not me) and all is well again. It does'nt happen very often but always seems to happen when you least expect it. Any ideas anyone?

Air filter is clean ?? As only happens when accellerating hard it's possible you can't get enough air hence too much fuel and black smoke ??

Ello Poirot, how ya doing?

Thanks Willo........Will give that a try

Yup. . . . . Willo Sir

cashybai said:

Ello Poirot, how ya doing?

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I am the AVATAR, don't you call me Poirot son.

ming said:

Yup. . . . . Willo Sir

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As none of you lazy bums had answered to the man I thought "let's try".....

Eating oil through turbo ??

Buston said:

When excellerating hard ( From standstill normally )in my 98 XEDI i sometimes get a sudden and not to mention embarrasing loss of power followed by a massive plume of black smoke out the rear end ( the car not me) and all is well again. It does'nt happen very often but always seems to happen when you least expect it. Any ideas anyone?

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Check out basics first . . .fuel filter [yer have to re -bleed your model ,worth doing and check yer got no water vapour] un like uncle Willo say's [air filter] vacuum filter. . . .if youv'e still got it then injector cleaner ,its possible one is getting blocked or part blocked when running. . . . .un best oh luck

danda said:

Eating oil through turbo ??

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Black smoke.....

Thanks for your ideas everybody......will go through some of those ideas at the weekend

I had a similar problem with my TDI passat a few months back and was told that black smoke = unburnt fuel whereas white smoke = burning oil. Anyway, I took the car to a local garage where the mechanic said that most of the time black smoke indicates either a turbo problem or an air problem. Mine thankfully was an air problem as a quick inspection of all the air hoses to the Turbo unit revealed a spilt in one of the hoses.

Apparently, when you accelerate fuel goes in, spilt opens up, air mix all wrong and loads of black smoke out the back.

So have a good look at all your hoses to and from the turbo. good luck.

Black smoke = excessive fuel
White smoke = water (burnt/evaporated as leaking into cylinders)
Blue smoke = burning oil

hi buston

do you no if eng has a E.G.R valve ? exhaust-gas-re'circulator .
had same prob and it was the E.G.R.V
FIX by blocking it off as not needed