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Model specific boards => Golf mk4 => Topic started by: 1.6mk4GOLF16v on 14 April 2012, 17:22

Title: Blue smoke and engine codes
Post by: 1.6mk4GOLF16v on 14 April 2012, 17:22

blue smoke when i rev it, smells like theres alot of unburn petrol in it or maybe burning to much petrol, over fuelling perhaps?

codes that came up were:

16804 - catalyst system bank 1, effeciancy below threshold
            P0420 -35-00--
17811 - EGR system, regulation divergence
            P1403-35-10
17566 - Manifold pressure sensor (G71): implausible signal
            P1158-35-10

Title: Re: Blue smoke and engine codes
Post by: rockmonkey69 on 14 April 2012, 18:30

Too much fuel otherwise known as running rich gives black smoke not blue, your burning oil too, this might be the reason your catalytic converter is potentially blocked up.

Title: Re: Blue smoke and engine codes
Post by: 1.6mk4GOLF16v on 14 April 2012, 19:08

ive decat my exhaust pal, any other ideas?
is there a way to check lamba in bank 1? (manifold)

Title: Re: Blue smoke and engine codes
Post by: rockmonkey69 on 14 April 2012, 20:58

Your 16804 is more than likely the result of having a decat. You can run some logs to check if it's working. Mind I would be more concerned about the blue smoke though.

Title: Re: Blue smoke and engine codes
Post by: Wayne on 14 April 2012, 21:14

Blue smoke is oil being burnt so you have problems with valve stem seals or piston rings.

Title: Re: Blue smoke and engine codes
Post by: 1.6mk4GOLF16v on 15 April 2012, 14:02

Quote from: Wayne on 14 April 2012, 21:14

Blue smoke is oil being burnt so you have problems with valve stem seals or piston rings.

cheers guys will look into it asap