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Undo the cable from the FD. Pull on the cable to tension it, then try the STI.
Similarly, try to move the FD by hand (mounted on the frame, but disconnected): is it free to move all the way over? Are the stops limiting it?
Assuming they're OK, then I can only think you don't have enough tension on the cable.
Scilly.Suffolk
@vilms5000
Having failed to set up two FDs (6600, 5700) on two different bikes, I am now eyeing the STI as maybe the problem. Does this ring true? In both cases, I was unable to get the FDs to shift from small chainring to large and so, today, have removed the FD entirely.
Here's how it was set up originally...
old steel Raleigh frame with braze-on:
Ultegra 6603 STI (triple)
FD-6600 (double)
FC-6600 (double)
I never got this to shift! I suspected the FD-6600 was just a bit knackered.
I replaced it with...
Ultegra 6603 STI (triple)
brand new FD-5700 (double)
FC-6600 (double)
Still couldn't get it to work properly, but I assumed this was my 11-thumbs approach to bike fixing.
Anyway, I put the bike in for a service, a frame crack was discovered and I had to replace the f + f. BUT, the person doing the service said that he thought my FD was broken because it wouldn't shift. Weird. NEW FD, never been set up. Broken?
I put all the gear on a replacement frame + fork...
carbon Ambrosius Celcius clamp/braze-on adaptor:
Ultegra 6603 STI
FD-5700
FC-6600
STILL couldn't get it to shift, so removed it entirely.
Any ideas how to test if it's the STI without breaking the bank and buying another?! Is the Triple a problem here? TIA!
Paul