engine starts and dies right away

[blueshield11]

Now I have another problem with my 380SL 1982.

The engine only starts once, for about 2 seconds and then it stops. And no way it is going to start again, not even when I put some fuel spray in the "hole" of the air filter.
When I wait for a couple of hours the engine starts and stops right away.


I have checked the vacuum hoses and there is nothing wrong there.

When I loosen up 1 hose of the fuel distributor the fuel comes out.

I have checked the sparking plugs and they are dry.

It looks like when the car is standing for some hours the engine has become the fuel it needs to start but it dies right after that.

I hope you understand my english.

does somebody have any idea (s) ???