Engine Start Problem

[Guest optimum]

I am having troubles with engine start after installing the patch. I have not seen anyone else with this problem. All other aircraft are fine, but the 747. I have APU Bleed air on (APU Started of course), fuel configured, Autostart on, Pack 2&3 off, and when I pull the ignition switches the engine do not spool at all. I get a reading that the ignition is active but no spooling of the engines. I have started this airplane 100's of times before the patch and I'm not sure what I'm doing wrong. Has anyone else experienced this?Thanks,Troy StevensUAL6210http://virtual.united.comhttp://www.precisionmanuals.com/images/forum/supporter.jpg

[Mats_J 2]

Troy,Cutoff switches to IDLE?Hope it helps,

[Guest optimum]

Mats,Yes the cutoff switches are at idle. It's really acting like there is no Bleed Air from the APU. Im stumped on this one.Troy StevensUAL6210http://virtual.united.comhttp://www.precisionmanuals.com/images/forum/supporter.jpg

[Guest Just747-400]

How about the L/R ISLN valves?