Aharon wrote on Mar 8^th, 2021 at 3:44pm:

I have no problem starting engines 2, 3, and 4 on FIRST TRY. Starting engine 1 is more tricky and problematic. It never starts on first try and it always takes me THIRD or FOURTH try to get engine 1 started and running.

I can't understand why engine 1 is so hard to start. It starts first time, every time for me. In fact all engines start first time, every time for me. :-/

I just did an engine start in FSX-SE, and engine 1 didn't start on the first attempt, it started on the second. After restarting FSX-SE, with the 707, I put the Engine Start Levers in the IDLE position, then started the engines, and engine 1 started on the first attempt (so did engines 2, 3, and 4).