truck won't start

There are a number of things that can cause this, so we need to start with figuring out what we have and don't have in order to figure out what system to dig into.

Here is a guide that will get us started:

https://www.2carpros.com/articles/car-cranks-but-wont-start

We need air, fuel, spark, and compression in order to get an engine started.

So, let's start with fuel as this is the most likely cause.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

You can also use starter fluid and see if the engine will start.

If not, then we need to move onto spark and for that we can just pull a plug and hold it against the block and see if there is spark.

https://www.2carpros.com/articles/how-to-test-an-ignition-system

lastly, we need to check compression and this guide will help with this:

https://www.2carpros.com/articles/how-to-test-engine-compression

Please run through all this info and let us know what you find. Thanks