I have a triumph tt600 it has spark and injectors working .sat for 1yr.started right up ....stalled and now will not start.

yes

I am assuming that you have throttle body injectors. Replace them.

what should the fuel pressure be on a TRIUMPH TT600

this 2000 triumph tt600 wont start it does turn over it was runing last riding season it have new battery fresh oil im thinking the fuel iinjector need cleaning im at the right path to get it runing

This is difficult. I'm sure that somehow you have lost the ignition timing. What I'm not sure of is how this might have happened.

i have had same problem with two of my bikes it may be something closely directed to a ballast resistor may be called something else on a triumph it happened on my suzuki and honda , ok triram

Check fuel filter and air filter, then spark plugs, not necessarily in that order.

There are no mass-produced engine parts for the 600/650cc, so you'd be looking at custom built parts. There are ecm programs (e.g. power commander and tuneboy) that will help with power as will aftermarket mufflers.