missfire on startup?

[Paradox1]

started the engine this morning,while it was idling I have it a little rev(don't usually do this but it was below 2k anyway) the car then sounded like it had a wot box without the pops and the revs were moving up and down like they were on crack.any idea how to fix this?there was smoke out the exhaust but that's normal on startup

 

[Prawn]

my daily does this too sometimes on cold start for 30 seconds or so, it has a right little wobble.

To be honest, it's never bothered me.

I'm sure Tufty or Bill explained it once,

 

[Paradox1]

****** hell your up early!

first time it happened to mine.was planning to get some wynns in the fuel tank and maybe change the spark plugs but I'll hold off for a bit.though it was coil packs but they ain't even a year old yet

 

[Prawn]

****** hell your up early!

Up early? I've been at work for an hour and a half, and that's after a 45 minute drive to get here!

I'm sure it was something silly like overfuelling oncold start that causes it

 

[finesse]

Duff Temp sensor, have a look/ fault scan