97 cc 454 cranks but wont start

[superkingd]

1997 cc 4x4 dually.
I have owned for 10,000 miles with no major issues.
I got in it today and drove a block then it died like someone shut it off. Cranks but wont start.
I got it home and in garage.
fuel pump cycles and has 58 psi
I pulled a plug it has spark
I have sprayed starting fluid into intake tube and it makes no difference.
It has oil pressure while cranking
The fuses for ecm and injectors seem good
The plugs are wet when pulled.


I am unsure if wet is from starting fluid or gas.
It also has an oil spot the size of an old record under it but in the 10 months I have had it, this has happened every now and again. about 4-5 times.
While screwing with it, it did start and idle very rough for 3 seconds then died.

I am luckily off work this week but desperate to get this fixed, thanks in advance for any help.