Rough running when cold?

[johnte]

HELP!! Any ideas why a 4.6 P38 will run rough when cold?  it does this every morning when I start it, then after the first couple of hundred yards it's OK (It could be missfireing, but why :doh:)

Appart from this, no other probs - when it's warm it runs fine, temp gauge never goes higher than the middle and it doesn't use a drop of water??

[ben_haynes]

have you had it serviced recently as we have been having a few probs with vehicles (extra cold weather we have been having) and a full service normally sorts them (Air Filter, Oil Filter, Fuel Filter(if fitted) and Spark plugs)

[Range Rover Blues]

It should run rich when cold but I think mine has been running extra rich, it's often sulky especially if it's been stood and you can smell the fuel (I run the LSE on Optimax).

[Skibum346]

Lumpy idle on our RRC LSE has been diagnosed as hole in the dizzie vacum advance diaphragm.

Might be worth checking.

Skibum

[Range Rover Blues]

Lumpy idle on our RRC LSE has been diagnosed as hole in the dizzie vacum advance diaphragm.

Might be worth checking.

Skibum

Interesting :-k