mercedes 190E?

I own a190E 2.0 ltr petrol/manual. It's been off the road probably 8+years Firstly replaced the fuel pump and stale petrol.The car would run on the drive until its normal running temp then would drive for 600mtrs starts to cough and die.Leave for a few minutes and it would run buy very poorly back firing but feathering the clutch and throttle could return home.Replaced the coil, rotor arm and fuel filter.Now currently will not start! Anyone experienced the same whocan throw any light on the problem?