9-2
SECTION NINE
x Lack of fuel
x Battery cables loose or corroded
x Loose electrical grounds at engine
x Ignition switch problems
x Dirt or water in fuel system
x Engine needs tune-up
Poor High Speed Performance
x Fouled spark plugs, incorrect spark plug gap or heat range
x Dirt or water in fuel
x Lack of fuel
x Restricted exhaust system
x Plugged flame arrestor
x Insufficient air supply to engine
x Engine needs tune-up
x Damaged or incorrect propeller
Engine Cranks / Won’t Start
x Weak or shorted coil; no spark at plugs
x Loose engine grounds
x Lack of fuel
x Weak or discharged battery
x Boat Engine Safety switch not attached
x Vapor lock
Idle – Misses or Runs Rough
x Spark plugs fouled or cracked
x Spark plug or distributor wires loose or shorted
x Plugged positive crankcase ventilation system
x Engine in need of tune-up
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