All liquid fuel engines wont work...

[MIKE-MIKE-40CAL]

edit; i fixed it. my keyboard didnt work

Edited December 7, 2022 by MIKE-MIKE-40CAL

[Gargamel]

Moved to Gameplay questions.

Some pics of your craft and screen when it happens would help.

 

 

[Streetwind]

Option A: you've fitted bipropellant engines but only supplied liquid fuel (no oxidizer)
Option B: you've fitted airbreathing engines but only supplied liquid fuel (no air intake)
Option C: you've placed a part with no fuel crossfeed between your engine and your fuel tanks
Option D: you've installed one or more mods incorrectly and have broken your engines
Option E: None of the above, and you will post a screenshot to illustrate

Pick one    (and welcome to the forums!)

 

Edited December 7, 2022 by Streetwind