In the mornings my saphh cossie struggles to stay running? It starts fine runs for a few seconds, struggles then cuts out. Start it up again and the same happpens. If you give it a few revs or set of driving it's a little lumpy until you've done a few mile.

Seen as i kept it garage over the winter ( I did start it up though twice a month and let it run to temp) i thought it may be dirty spark plugs?

Any thoughts on the subject ? any help?

Cheers
Darren