Fuel Injector Torquing

To pressurize the system and check for fuel leaks… do not start the engine, but let the ECM power the fuel pump for 5 seconds when energized.  Have a Fire extinguisher available for use at all times.

The Fuel Injector is installed and torqued during the manufacturing process and should not be replaced/tightened under normal circumstances, but if replacement is directed a strict replacement torquing is required.  If the injector is over-torqued, it will cause the injector to malfunction. 

UPDATE:  Kits manufactured before June 2019, can be upgraded using 1/4″ steel tubing cut to .90″ inch and placed over the hold-down screws as sleeves.  This will allow torquing the hex head screw without over-tightening causing injector seal leakage.  

The injector may also leak a small amount of fuel initially, but then the o-ring will seal the leak shortly after the injector seal swells from contact with gasoline.  A small amount is a drop or 2, not a spray or an amount that would cause a fire risk.   If the injector seal continues to leak fuel, then a replacement seal must be installed and injector housing checked before re-installation.