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Model specific boards => Golf mk4 => Topic started by: Ian1985 on 15 July 2016, 10:34

Title: GTI MK4 - Strong fuel smell
Post by: Ian1985 on 15 July 2016, 10:34

Hi all.

I noticed recently that my 2.0L GTI MK4 seems to have a strong smell of fuel coming from the exhaust. Smoke out the back is slightly black aswell.

Any ideas as to what may be causing this?

Thanks in advance.

Title: Re: GTI MK4 - Strong fuel smell
Post by: lemski on 15 July 2016, 13:26

Lambda sensor reading wrong normally puts engine light on though

Title: Re: GTI MK4 - Strong fuel smell
Post by: Ian1985 on 16 July 2016, 13:08

Thanks for the reply. I was thinking sensor. No engine light though, I did a high rev yesterday blew abit of black soot out the exhaust.

Title: Re: GTI MK4 - Strong fuel smell
Post by: lemski on 16 July 2016, 13:36

Id try lambda definately

Title: Re: GTI MK4 - Strong fuel smell
Post by: Drewtus on 17 July 2016, 14:08

mine did this , changed the lambda and all was well ...

Title: Re: GTI MK4 - Strong fuel smell
Post by: itavaltalainen on 18 July 2016, 20:27

faults in memory?
measuring blocks look ok?

would look at both before throwing money at lambda...

Title: Re: GTI MK4 - Strong fuel smell
Post by: Dalo Harkin on 22 July 2016, 11:34

scan it with VAGCOM and it will also tell you which lambda (front or back) back doesn't really do much except protect the standard cat from damage, front one compensates for fueling etc