engines having no fuel on further stages

[shields]

Not sure if this is the right forum as i'm new to KSP. So i have the problem of where after my initial burn stages, my other engines that i would use to further

push my ship into orbit and any further are empty.. No liquid fuel.. what am i doing wrong exactly?? i load the ship up with many fuel sections but clearly

i'm doing something wrong, recap i'd like some help on how to manage my fueling so i may venture further and stop this issue from occurring when i'm switching

stages.

Thanks heaps!

[Cykyrios]

Hi there,

If you have any screenshot to show us how you built your rocket, it would help us help you help us all (ahem, GLaDOS was here...).

Anyway, depending on your rocket, it's possible that you will need fuel lines for some of your engines.

[Uberick]

As said, photo would help(try imgur or something of that nature).

Without a photo, my guess would be that the way your rocket is staged is such that the bottom stages don't realize that they're only supposed to be drawing fuel from a certain section of the rocket. A combination of rearranging decouplers, shutting off fuel crossfeed, or fuel lines should fix it.

If you can throw up an image with some more details maybe we can get a more accurate diagnosis.

[tazbertair]

I have the same problem at the moment. a2.5m tank/ poodle engine/ 2.5m decoupler/ 2.5m tank arrangement draws fuel from the top tank before emptying the lower one. The only way I have found to disable it is to right-click on the top tank before launch (or when I remember - hopefully before the stage below starts up!) then left click on the two green arrows beside the resources. They turn into red circles, indicating that fuel flow is disabled.

Of course, it is slightly important to remember to switch fuel flow back on before you need that engine...

For added hilarity points, I currently have a 50% fail ratio when staging - the decoupler seems to ram the engine straight up through the tank causing a massive explosion and no more fuel...

[Procyon]

using docking ports or decouplers?