Hi

Re-installed the 767 version 1.5 today and I am having the exact same issues... I tried everything, watched all the commonly linked to Youtube videos, but to no avail. My engines have power (APU on), fuel (fuel pumps all on, fuel switches on the central stand flipped UP) and air (Duct Pressure gauge showing pressure) still nothing happens when I turn the engine starter switches. "Valve" flashes once then starter switches back to center/off position.

Loading the 767 from a cold-n-ark default flight with the default FSX C172 with battery and master avionics ON and fuel selector to ALL.

What am-I forgetting or what am-I turning on that I shouldn't, or not so soon ? Does the IRS need to be aligned and FMC all programmed for the engines to be started ?

I don't have the 757, so cannot try the procedure on it to see if it's a 767 install - related issue.

Darned be those glass cockpit space planes, a LCD screen doesn't tell you what's amiss like dials on a full flight engineer's panel :D

EDIT : Solved it after one final try... Do NOT turn the Packs or anything above the Packs switches on.  Open the APU bleed, make sure the air flows all the way to the engines, but no Packs, and it works... Silly me.

Cheers

Nico