Hard starting, runs fine

[Mmast23]

Hi
I own a 2004 vy s2 Holden crewman and for the past month or so my ute has been cranking for around 7 to 10 second when starting, but if I fill the car up it starts fine and starts fine if the front end is jacked up.
I swapped out the dfi module and have 3 newish coli's and it fast cracked for 1 to 2 seconds and started up perfect, I did at least 50 starts and it was working perfect but when I went to show someone it went to 5 to 6 seconds of cranking.
If anyone can help it would be appreciated
Cheers

 

[ephect]

Sounds like the fuel rail is leaking down after long periods of non use.

Possible culprits are either injectors or fuel reg.

Scan for codes, to see if anything major has been logged, if not it'll definately be fuel rail related

 

[Lex]

As above, & it can also be the fuel pump.