TROUBLE CHECK CHART
OUTBOARD STARTS, LOW MAXIMUM RPM
T–5
OUTBOARD STARTS, LOW MAXIMUM RPM
EXCESSIVE SMOKING
OBSERVATION POSSIBLE CAUSE PROCEDURE
SystemCheck light Outboard is in S.A.F.E.
Access EMM service codes and
check System-
Check warning
Setup or rigging
change
Incorrect propeller
Refer to specifications,
check recommended WOT
RPM; water test and install correct pitch propeller
Incorrect outboard mounting
height
Refer to installation guidelines
Performance of
outboard at lower
speeds appears
normal
Throttle plate opening Check throttle plate and WOT opening
Incorrect, fouled, or worn spark
plugs
Replace spark plugs
Contaminated or poor quality
fuel
Check or replace fuel supply
Fuel supply restricted
Check primer bulb, anti-siphon valve, and fuel
pick-up, check for fuel system air leaks
Low alternator output (55 V)
Check voltage on 55 V circuits, refer to
SYSTEM
ANALYSIS
and ELECTRICAL AND IGNITION
Weak or erratic ignition
operation
Check ignition, refer to
SYSTEM ANALYSIS and
ELECTRICAL AND IGNITION
Fuel injector electrical circuit or
control function
Check voltage at injectors, refer to SYSTEM
ANALYSIS
Restricted or leaking fuel
injectors
Check injectors, refer to
FUEL SYSTEM
Low fuel pressure
Check circulation pump operation, refer to
FUEL
SYSTEM
EMM programming, timing, or
operation
Check EMM program and timing;
check injector
coefficients; and monitor injector circuits and
ignition primary outputs
Restricted engine exhaust Check and repair as needed
OBSERVATION POSSIBLE CAUSE PROCEDURE
May coincide with
increased oil
consumption
(normal if occurs after
winterization)
Contaminated or poor fuel Check or replace fuel supply
Excessive fuel or oil
consumption
Check fuel system for fuel supply air leaks or
leaking fuel injectors
Outboard in break-in mode Use diagnostic program to confirm
Outboard mounted too low Check installation height of outboard
Vapor separator vent
Check vapor separator assembly for proper
venting/float valve operation
Faulty/leaking fuel injector(s) Check injectors, refer to
FUEL SYSTEM
Damaged fuel lift pump Check for internal leaks
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