Hmm the most reliable car ever...
Not truly modifications I know but a remedy will definitely make it perform better!
It sometimes cuts out when idling and then won't start again for ages! Great fun at traffic lights or a busy junction.
Also, misfires under load.
I'm thinking fuelling problems? Or leaky/sticking valves?
1986 model 1 litre with auto choke.
Any ideas chaps?