Sorry to bump this thread back up but i have the same issue with a ford puma i have done a timing belt kit on, pinned it at the crank (nightmare in itself) and locked the cams at the rear.
Put it all back togther and it starts but has lack of power and has the eml light on with a current cam position sensor code stored. I have stripped it down and rechecked and rechecked the timing and it seems spot on, one question i have though is the inlet cam pulley has a good 10 degress movement on it back and fourth, where do you set the preload for the vvt? This is the only thing i think it can be?
Any help appreciated, starting to get cold and dark and all on mine own now

Edit, well after stripping it down aaain and thinking sod it the belts coming off and i am having another bash this time it all looks good, if anyone wants me to put some pics up on how i adjusted the vvt mechanism i will do.
Time to go home and thaw out.
Cheers, Carl