I had to disconnent the fuel rail when I was installing the LPG system and since I put everything back together again, the engine will take quite some cranking to fire up (on fuel).
Before it was instant. If I leave the key in ignition a couple of seconds it it much better, but still worse than before. Feels like the fuel rail is empty at startup.
I checked for fuel leaks at the rail but found none.
Did I miss something while re-assembling the rail ?
Is there a non-return-valve that can break ?
And do I need a special fuel pressure gauge to measure the fuel pressure at the schrader valve or can I take an air gauge...?!?
Any hints are appreciated,
EDIT: I just remembered that there seems to be quite a pressure build-up in the fuel tank, when I remove the filler cap there is a strong blow of air from the tank for several seconds...came up at a similar time, maybe it is related...?