starting problem from cold renault twingo 1200 1996?

im having great difficulty starting my renault twingo 1200 1996 petrol car from cold. when i say cold i mean first start of the day. it always seems to go in the end sometimes with a bump start. when turning the key she almost gets going for a second or two then fades out then when you turn the key off it gives another little half hearted try.
after a run out for the rest of the day no problem.
then at times she starts first start of the day no problem.
i had wonderd if there is a fuel filter that may be blocked
can any one help