Liquid Fuel engine will not ignite, have fuel and oxidizer, throttle at 100% decoupler above fuel tank, pressing the space bar to ignite stage 0.

[DavidArchibald]

Hi Can anybody help?

I also can't seem to post an image.

 

thanks

[Admiral Fluffy]

I’ll try.

Have you checked your staging? If that doesn’t work, is the fuel tank directly attached to the engine?

Welcome to the forums! 
Also, this is how you put in images.

Quote

Q: How do I embed images in my posts?
A: The forums don't host images, so you have to use a photo-hosting site, like imgur.com.  A direct link (i.e. xxxx.jpg, xxxx.png) to most images will auto-embed, or you can hit "Insert other media" then "Insert image from URL." 

 

Edited January 22, 2022 by Admiral Fluffy
Images

[HebaruSan]

22 minutes ago, DavidArchibald said:

I also can't seem to post an image.

You have to upload them off-site and post the image's URL.

One place you can do that is https://imgur.com/

[Vanamonde]

Have you perhaps accidentally turned the engine off using its r-click menu? 

[jimmymcgoochie]

Check that all of the following are true:

1. The engine is attached directly to a fuel tank.
2. The engine is a liquid fuel/oxidiser rocket engine (e.g. not a jet engine, monopropellant engine/RCS thruster or ion thruster).
3. The fuel tank has fuel in it.
4. Fuel flow from the fuel tank is enabled (beside the liquid fuel and oxidiser bars there should be two buttons with green triangles, not red crosses).
5. The engine has a throttle limiter >0.
6. The engine is switched on, either through staging or by manually activating it in its right-click part action window (PAW).
7. The vessel is controllable (either a Kerbal on board or a probe core, connection to KSC and electric charge >0).
8. Screenshots- or even better, a video- would really help here.