Lumpy When Cold on 172

[Richard1st]

Hi Guys

Does anyone else have a few minutes of lumpy jerky running from cold on their 172? Seems to come and go at different times of the year so not down to the cold weather me thinks......Any Ideas?
Soon disappears but can get quite difficult to speed up to change gear for a couple of miles - guess its the Automatic Choke??

Any help would be much appreciated.

 

[Russ_16v]

yup they all do it mate,something to do with emmissions,every one iv driven including mine does the same

 

[JACKO CUP 172!]

think it is the auto choke on cold start??

 

[Lagerlout]

Yeah. The ECU runs the car as lean as possible when cold to comply with emissions.

If you get a remap, GrpN etc is doesn't happen.

 

[Richard1st]

Thanks nice to know its not just me for a change....

 

[Lagerlout]

No. they all do it mate. Deffo.

When you own a French car you have to think of these things as part of the cars character, rather than a fault lol.