Hard start problem

[dirtfan50]

I have a 2003 GP 3100 and it has been hard to start at times?

I just put a fuel pressure gauge on it NOT running but with the key on and has 40+ psi but drops quickly.

Running it has 45+ psi and steady..

This always seems to start ok cold and sometimes (not always ) when you try and restart its hard to get it fired ( takes quite a few mins )

I have pulled the vac-um line on the pressure regulator and no fuel leaking from there?

Would you think its the fuel pressure regulator anyway??

Thank you for any help..
Scott

[dpzelenak]

by hard to start do you mean you have to hold the key and let it turn over a coulpe times and then it fires up

[dirtfan50]

Yes you have to crank and crank forever it seams?

[dpzelenak]

ok then i wouldnt think its a fuel proplem..yes it could be but..but unlikly i would lean more towards a position sensor like the cmp or the ckp, and even the map and maf sensors too..anything the engine relies on to run and start..if the sensors check out then i would move into the ignition system like plugs, wires, packs, and even the icm if it goes that far