HELP HARD STARTING PROBLEMS P11 PRIMERA

[pbl64]

Hi all,

i'm new to this site and do hope I can get some advice. I recently changed my sr18 engine and tranny and replaced with another sr18 this was done in September 2010. From then til know I have this hard starting problem once the car parks up for several hrs it takes maybe 4-6 attempts to start. Once started the car works perfect, I have thought of and changed the obvious. Can anyone help me????

[turbosnail]

maybe a fuel pressure problem,check fuel pump and,or fuel regulator

[pbl64]

I believe a pressure problem also, have changed the fuel pump and the regulator also....I know that I have a fuel leak on my gas tank some where could this cause this problem....