1994 Freightliner FLD120

Truck does not run. Last report from mechanic read: Oil level is extremely high and smells like fuel. Without tearing into it’s injector O-rings. Code for injector #4 fault. May need to replace all injector o rings. May need an oil change to see if it resolves the problem. Will need to look into it deeper with the valve cover off to make a better determination. As is. The price IS NEGOTIABLE and the truck MUST SELL