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 on p. 113 and ELECTRICAL AND
IGNITION on p. 135
Weak or erratic ignition
operation
Check ignition, refer to SYSTEM ANALYSIS on
p. 113 and ELECTRICAL AND IGNITION on
p. 135
Fuel injector electrical circuit or
control function
Check voltage at injectors, refer to SYSTEM
ANALYSIS on p. 113
Restricted or leaking fuel
injectors
Check injectors, refer to FUEL SYSTEM on p. 173
Low fuel pressure
Check circulation pump operation, refer to FUEL
SYSTEM on p. 173
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 on p. 173
Damaged fuel lift pump Check for internal leaks
To Next Page
Loading...
Need help?
General
