Peugeot 106 XSI Poor running

[J100KSY]

I have a 1993 k-reg peugeot 106 xsi 1.4 and it misfires and hesitates while running.

I had it MOT'd last month after it had been stood for over a year, it just scraped threw on emmisions!

To try and cure the problem i replaced the following

Spark Plugs
Ignition Leads
Coil Pack
Lambda Sensor
Fuel filter & fuel lines

The car still misfires and hesitates! Any ideas??????

Thanks

[J100KSY]

The engine light has flickered occasionaly after its initialy been started but then goes off. That has only occured since i have replaced the lambda sensor. The codes have been read and nothing was found to relate to this problem!

[J100KSY]

The tank was empty when i got it so put some fresh fuel in and some petrol treatment. Been filled up once a week for the past 2 months so had plenty of fresh fuel threw!