Cranks no start issue

Did this no start issue happen after these repairs or did you make these repairs trying to correct it?

Here is a guide that will help with this to get us started:

https://youtu.be/dCjmRL3p4Cs

Also, does this happen all the time? Sounds like it is intermittent? If so, does it start normally and drive fine except for when this acts up?

When this acts up try using starter fluid in the intake and see if it starts. If not then we need to confirm this is a spark issue by removing the plug and hold it against the block and crank the engine to find out if we don't have spark.

Let's start with this and go from there. Thanks