hello, i have a 1986 sierra cosworth that will start, idle, but just wont rev, its recently had a full engine rebuild with forged pistons, everything is new including ecu, loom, injectors, sensors etc.. and has had many master mechanics pickled and would like opinions from people who know about fords so ive decided to try here oh and i was wondering if anyone else has come across this problem, cheers.

Liam.

P,S car is god damn curse