running rich

[GAF2]

hi guys, on a recent emissions test the reading on the g was 12%, so after reading a couple of posts on here i replaced the lambda sensor but when starting up you can still smell the petrol and the inside of the exhaust is blacked up.  Any ideas what to investigate next that could be causing this.

cheers grant

[lance]

check or change the blue temp sensor

[GAF2]

how do u check it? do u have to remove it?

cheers

[PeteG40]

whats yr co pot set to?

[LeonL]

whats yr co pot set to?

My car also seems to run abit lean,

How'd i go about checking the "Co Pot" pete? Mine seems to have been tampared with in the past due to missing blue cap and screwdriver marks in the black "cap?"

Thanks

[GAF2]

sorry guys, your quite correct rae it is in the FAQ section.  Cheers guys am off to have a read and take notes.

cheers grant

[swiftg40]

have you got a de-cat pipe? emissions will be higher without a cat

[GAF2]

yeah its de-cated but thats not enough to cause this much overfueling

[PeteG40]

get a multimeter over the two end pin of the plug
usually abotu 550 ohms

[GAF2]

yeah am goin to test that tomorrow and the blue temp sender.

cheers grant

[LeonL]

My Co2 Pot was 508 Ohms (think i done it correctly)...

So is this bad? Does this mean it is running richer then it should? How do i solve it?

Thanks

Ps: Sorry for a little thread hijack, posted here since both have same problem

[LeonL]

Anyone?

[hayesey]

you need to take it to a garage and put it on a gas analyser to set the co pot.  500ohms is a bit low though, I usually set it more like 600-650ohms as a base setting. 

[LeonL]

you need to take it to a garage and put it on a gas analyser to set the co pot.  500ohms is a bit low though, I usually set it more like 600-650ohms as a base setting. 

Would this mean its running rich or lean? having low ohms on my pot

[hayesey]

lower means richer yes.