Exhaust spewing soot and white smoke out + loud engine noise (MK3)

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jasondurg
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Exhaust spewing soot and white smoke out + loud engine noise (MK3)

Post by jasondurg »

Hi everyone,

Was doing some work to my MR3 this morning; replacing PCV valve and air filter plus gave the car a nice full wash and wax :yahoo:

However.... when starting it up just a second ago, the engine was very loud, my exhaust started to fire out black 'soot' and quite a bit of greyish smoke was coming out :(

Looked on the forums but haven't found anything - I know that I need to replace one of my O2 sensor tomorrow (bank 2 sensor 1) because the garage I took it to for servicing last week said so but could that be the only reason?

Thanks ,
Jason



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Re: Exhaust spewing soot and white smoke out + loud engine noise (MK3)

Post by carolineasb »

Why were you changing the PCV? Sensors breaking won't cause lots of black soot and smoke and make your engine loud :(

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jasondurg
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Re: Exhaust spewing soot and white smoke out + loud engine noise (MK3)

Post by jasondurg »

Was just routine maintenance (read that PCV should be changed every 50-60k miles or so).

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Re: Exhaust spewing soot and white smoke out + loud engine noise (MK3)

Post by Snorkie »

When you were giving it a wash, did you get any water in the engine bay?

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jasondurg
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Re: Exhaust spewing soot and white smoke out + loud engine noise (MK3)

Post by jasondurg »

Maybe a small bit (bonnet was down). Wiped up the small pools of water in the engine bay with some tissue afterwards, however.
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Re: Exhaust spewing soot and white smoke out + loud engine noise (MK3)

Post by jimi »

Logically it was fine before you changed the PCV valve and now its not, so I'd be looking at what you have done. Maybe refit the original one snd see what happens.
Also if the PCV is drawing oil out of the crankcase and chucking into the inlet, then you'll get white smoke.
Black is not a colour ! .... Its the absence of colour
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