2004 E55 AMG Starting problem

[Atowers]

Hi all. Recently purchased a 2004 E55 AMG
After a few days it's developed a starting problem.
If I leave the car for a few hours and try to start it
It won't start until around five to ten seconds of turning over.
If I turn the ignition on and off three times allowing
the fuel pump to prime it starts up straight away.

After car has started or between short trips it's fine.
It's as though there is no fuel in the system upon first
start.

Any help on this matter would be good.

Many thanks

Andy

 

[abecketts]

First off get it to a garage with a star system and have the codes read to help diagnose the problem, only then can you work out what needs doing. Hope it is soon back to health.

 

[AndyPCD]

As above. Needs going onto star the check if there is any codes etc.

Then next thing i would check would be to connect up a fuel pressure gauge to check pressure at the rail end to see if it is fuel related. But the way you describe is that it is fuel related and the fuel is draining back to the tank