Originally Posted by dannyboy950
The biggest secret is to clean the injector tube, be sure the old copper gasket at the tip of the injector doesn't stay in the hole. Also be shure you torque them properly, 28 or 29 ft.lbs if I remember correctly. Be shure the wireing connector seats fully in its cavity before ya put the valve cover back on. Matter of fact plug the harness connector to the pig tail connector before ya put the valve cover back on. Carefull not to break the plastic connectors.
The exact torque spec is 24 ft-lbs.
for the injector hold-down (TX-40). The torque spec for the high pressure oil rail is 8 ft-lbs. Use a 5/16 socket too. If you use an 8mm, you run the risk of rounding the heads of the bolts. Use a back up 12mm short wrench when undoing to five FICM bracket hold-down nuts too, in order to prevent the entire valve cover stud from turning with the hold-down nuts. The valve cover gasket is reusable. Do not tighten the valve cover bolts and studs any tighter than 71 in-lbs. They tend to break easily if you overtighten them.