I have a 2004 ford ranger with a 4 liter V-6, I believe it is a SOHC.

What is your question?

I believe it has a timing chain. What would be the most likely cause of the engine just shutting off for no apparent reason? Was no noise at shutdown had gas and was running fine. Could an ignition problem cause this rather than being out of time? If the engine jumped a tooth or two would the valves possibly hit the pistons? Thanks