HEEEEELP RS had a oil leak so this evening i dropped the sump and changed the gasket. Started her up, she idled for about a minute then cut out. so restarted it and it wont idle, just coughs and then cuts out What the hell have i done? car revs as normal just wont idle.

when i did the job, i removed the starter, droped the exhaust down, drained the oil, removed the sump, refitted the sump with new gasket, refitted starter motor, bolted the exhaust back up, filled up with oil and that was that. It doesnt leak oil (yet ) but cuts out

please help with some ideas someone
cheers
Danny