1999 "EE" 90, 115 FFI, 150, 175 V4, V6 FFI Outboards Service Manual, P/N 787024, Page 151Get this manual
Oil System Pressure Test
Remove oil pressure switch from the oil pump bodyApply OVIC Pipe Sealant with Teflon to threads of '8 inNPT adapter fitting and install 0-30 PSI (0-207 kPa) gaugeStart engine; gauge should show 6-20 PSI (41-130 kPa)
Injector Unit Pressure Test
Test must be performed while injector is installed in oil manifoldCap outlet elbow and connect 0-30 PSI pressure tester to the inlet elbowPump to 30 PSI (207 kPa)Pressure must hold for at least minutes
Injector Unit Resistance Test
Measure resistance of coil inside injector unit
Injector Unit Resistance 0.850.95