When the car is left for 10hrs+ when its fired up it fires up rough,like on 2-3 cylinders but for only about 5 - 10 seconds,even if the throttle isnt touched it gains in idle speed fine, then its fine all day,20 starts it fires up fine, but if left for a long time, same thing

now i have a few options

fuel pressure regulator ?
fuel pump ?
cold start water sensor on the alloy pipe ?

thoughts on which possible one ?

cheers

 

93 to 96?
Coilpacks been replaced recently?

 

yeah, 95 model
fitted 2nd hand coil packs about 8 mths back,my originals had cracked/broken tips under the rubber boots, these were fine,not crakced etc under the rubber boots,were good when i fitted them,starting wise etc

cheers

 

Coilpacks break down inside long before they crack.
Worth checking, changing plugs

 

idle control valve stuck in hot?