No start

I have a no start issue. I am getting correct fuel pressure, but I am not sure how to check spark. I have only limited tools. I have pulled plug and plug wire out. Left plug in wire and turn it over spark is there. But when I installed plug and wire. I tried start fluid to see if it would at least start. No still would not start. This all started when my cousin used my truck. He said the lower coolant hose busted. " And said he stopped the engine before it reached 260 degrees." But ever since I have had this problem there is no oil water mixed. Please someone help this poor boy in get this old truck running. Only ride I have and if I do not get it fixed I m afraid I will be out of a job.
of a job and out on my butt.