Hey there, just a quick question after following the FMC tutorial stickied at the top of the forum (thanks for that btw, it's a big help!). I get to the point where i am told to hit to/ga and then EPR, and instead of the engines spinning up to takeoff thrust i just sit on the runway with nothing happening, causing a big traffic jam on the taxiways and in the air. I followed the tutorial to the letter several times and the same problem happened, i also had a look into the manuals but couldn't see what i had done wrong. Anyone out there able to help me? (and the poor souls delayed because of my bird hogging the runway!)

cheers!

yeah i double checked that every time, a/t on and fd on, although i read in the manual one fd switch on and one off is needed for the auto takeoff if i read it correctly, but when i switch one on they both come on? or have i missed something? i really can't understand where i am going wrong. Thanks for the reply though 

I was thinking the same, i remember on another company's md-11 you had to advance them to 70% or something for it to kick in. When i tried advancing the throttles though i am pretty sure i still had full control over thrust, unless on the 757 it caps max thrust on the throttles to the takeoff setting?

Thanks for the replies!

I plugged in 45 degrees in the temperature section for a de-rated thrust (I guessed a number) and noticed a big difference.  Taking off from a high airport like Mexico City's at up a LOT of runway and the engines did not seem to even break into a light sweat.

So, if you're following the manual, it should work.

For the record, I did not advance my throttles all the way.

I recommend printing out Part III Normal Procedures in your documentation.  (You may have done this.)  It is a fairly detailed guide.  (You may have done already.)

This is not a simple airplane.  So it is possible that you are missing a step.  It is also possible you have a bad installation.  So the fixes range from filling in a missing step all the way to uninstalling and re-installing FSX.  Without being able to look over your shoulder, it is hard to say what the problem is, unfortunately.

If you could provide a step-by-step description of everything you are doing, that might help, if it were complete enough.  Screen shots would be better.  There's just no easy way to do this, I'm afraid.

It is frustrating that people are experiencing the airplane not following routes when I know darned good and well it can.  I will try to do a quick and dirty tutorial of how I do things, since at least it works for me.

You did Not answered this Question from slarkr007 :Have you fully completed the pre-flight procedures on the FMS? �Do you have T/O indications in the ADI and EICAS? �Did you complete the EICAS section of the pre-flight checklist (set the computer selector to auto, pushed in the thrust reference selector)? Did you have a T/O in the EICAS? Did you set the Computer selector and push the thrust Ref selector down? Those steps are easily missed. Herb

Sorry Herb, yeah i went through all that, although i was missing those steps until he mentioned them! And yes i am hitting EPR after i am at 1.10, the engines remain under my full control so i'm doing something wrong. The FMC pages say complete if that has anything to do with it. That sounds like a good idea, i will check out those video tutorials tonight and see how i go. If i still have problems i'll quickly post a step by step of what i am doing, which would probably reveal a whole bunch of obvious errors

Cheers for the help guys, much appreciated!

Still having the problem despite all your great help. Here's a step by step of what i am doing which might shed some light on this:

1. Load FS
2. Load 757 at EGKK (also tried various other airports and also tried loading the default cessna first)
3. Open overhead set IRS knobs to 'align'
4. Extinguish all overheard amber lights as described in the FMS tutorial and also the 757 manual
5. IRS to nav once lights are out
6. Yaw dampners on
7. Open CDU
8. Pos init page > Route
9. Load company route i created to save time (also tried with manual routes, tutorial route and direct routes)
10. activate > execute
11. enter perf init page
12. enter perf init info
13. Takeoff page. Flaps 15, 60degrees thrust (tried various other numbers) set CG and confirm vspeeds
14. Set trim on pedastal
15. Computer Select to 'auto' Thrust Red to 'both' and pushed in
16. set flaps to 15
17. FD and A/T on
18. Set IAS to VR speed
19. Check A/T, TO and FD show in greenon display
20. Release brakes
21. throttle up to 1.10 EPR
22. Hit EPR button and it illuminates
23. APR displays on screen

At this point the aircraft is slowly rolling, i don't touch the throttles. The EPR remains at 1.10 and airspeed never rises above 60kts. FMC pages all display 'complete' and as far as i can see i have done everything i have been told, although my routine is probably rather shoddy compared to how it's meant to be done. See anything i've done wrong? fingers crossed and thanks for your continued help!