
2011 ILMOR MV8 Owner’s Manual • Page 47
T R O U B L E S H O O T I N G
T R O U B L E S H O O T I N G
The following chart
is offered as assistance in identifying and correcting minor issues that may occur. Prob-
lems are listed in the order of most-likely to least-likely. Not all possible problems, causes and solutions can be listed here.
When experiencing problems, check surroundings before shutting down the engine. If suddenly stopping the power
would result in placing other boats and boaters in jeopardy, continue until it is safe(r) to slow or stop and analyze the situation.
Always be aware of surroundings and how your actions may impact others!
Problem
Possible Cause
Potential Solution
Engine will not turn over.
Safety switch tether not connected.
Connect the safety switch tether.
Throttle/shift control in gear.
Shift to neutral.
Main circuit breaker open.
Re-set the circuit breaker.
Battery terminal corroded.
Clean the battery terminals.
Battery weak or worn out.
Charge or replace the battery.
Loose or corroded battery
Clean and tighten the battery wiring
wiring connectors.
connectors.
Defective starter solenoid.
Replace the starter solenoid.
Defective neutral safety switch.
Replace the neutral safety switch.
Defective starter motor.
Replace the starter motor.
Engine turns over,
Safety switch tether not connected.
Connect the safety switch tether.
but will not start.
No fuel in the tank.
Fill the fuel tank.
Fuel filter clogged.
Have dealer replace the fuel filter.
Contaminated fuel.
Drain fuel properly and have dealer
replace the filter.
Weak or shorted ignition coil.
Replace the ignition coil.
No fuel to the engine.
See authorized ILMOR dealer.
Engine misses or
Fouled spark plugs.
Have dealer replace the spark plugs.
idles rough.
Loose or defective high-tension leads.
Have dealer tighten or replace the
high-tension leads.
Plugged PCV valve.
Have dealer replace the PCV valve.
Weak ignition coil.
Have dealer replace the ignition coil.
Vacuum leak.
See authorized ILMOR dealer.
Poor boat performance.
Fouled spark plugs.
Have dealer replace the spark plugs.
Contaminated fuel.
Drain fuel properly and have dealer
replace the filter.
Plugged flame arrestor.
Clean the flame arrestor.
Weak ignition coil.
Have dealer replace the ignition coil.
Fuel filter clogged.
Have dealer replace the fuel filter.
Ignition problems.
See authorized ILMOR dealer.
Poor gas mileage.
Fouled spark plugs.
Have dealer replace the spark plugs.
Plugged flame arrestor.
Clean the flame arrestor.
Inefficient driving habits.
Plane the boat quickly, then slow down
to desired speed.
Plugged PCV valve.
Have dealer replace the PCV valve.
Ignition problems.
See authorized ILMOR dealer.