1998 Johnson Evinrude "EC" 150, 175 FFI Service Manual, P/N 520211, Page 79Get this manual
Action StepsFuel System
primary circuit operates at 250 volts; the secondary circuit operates in excess of 35,000 voltsUse caution to avoid injury from shock, or injury from your reaction to shockDo not handle primary or secondary ignition components while the engine is cranking or running
INote For reference, see fuel flow diagram in Theory section& The FFI ignition system presents serious shock hazardThe
INote Extract any service codes before troubleshootingCorrect
all conditions related to service codes FIRSTDelivery System Step 1: Verify Fuel Delivery to Engine AInspect all fuel hoses and connectionsBCheck water separator canister for contamination
CCheck for fuel at port intake manifold vapor vent hose Little or no fuelOK Fuel presentprobable stuck vapor separator vent valve, repair as necessarySee Section 5
DCheck low pressure system by attaching 15 PSI (103 kPa) gauge to the low pressure test point at the top of the vapor separator, and crank or run engine 2-10 PSI (14-69 kPa)OKGo to Step Low pressurecheck lift pumpSee Step High pressurerepair stuck vapor separator vent valve