w124 e200 wont start when hot

[Tummshihead]

Hi guys,need some help with a w124 e200,starts first time whatever the weather and will run all day,however as soon as shes turned off then she wont start untill she cools right down.
Have checked fuel pump and changed fuel and air filters,but no joy.
Anybody any ideas?.

 

[a111r]

CPS, crank position sensor?

 

[AMGeed]

^ +1 for the CPS.
Has all the symptoms.