Can-Am 2008 DS 450, Operator'S Manual

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ENGINE TURNS OVER BUT FAILS TO START (cont’d)
4. Spark plug/ignition (no spark).
– Check ignition fuse condition.
– Remove spark plugs then reconnect to spark plug caps.
– Check that ignition switch and engine stop switch are at the ON position.
– Start engine with spark plugs grounded to the engine away from spark plug
holes. If no spark appears, replace spark plugs.
– If trouble persists, contact an authorized Can-Am dealer.
5. Engine compression.
– If no pulsating resistance is felt, it suggests a major loss of compression.
– Contact an authorized Can-Am dealer.
ENGINE LACKS ACCELERATION OR POWER
1. Fouled or damaged spark plugs.
– Check item ENGINE TURNS OVER BUT FAILS TO START.
2. Lack of fuel to engine.
– Check item ENGINE TURNS OVER BUT FAILS TO START.
3. Engine is overheating (check engine indicator lamp (amber) comes ON
or flashes).
– Check oil level in oil tank and refill if necessary.
– Ensure radiator is not obstructed.
– Ensure cooling fan is working properly.
– Check and clean radiator fins. See MAINTENANCE INFORMATION sec-
tion.
– Reduce vehicle speed but try to keep it moving to supply air to radiator. If
engine is still overheating after approximately one minute, stop vehicle and
set transmission to NEUTRAL. Apply parking brake and stop engine. Place
the ignition switch to ON position (
do not restart engine yet ). The radiator
fan will cool the radiator.
– Let engine cool down before checking coolant level and refill if possible,
refer to ENGINE COOLANT in LIQUIDS.
– If overheating persists, contact an authorized Can-Am dealer.
4. Air filter/housing plugged or dirty.
– Check air filter and clean if necessary.
– Check liquid/deposits in air filter housing drain tube.
5. Ignition coil disconnected.
– Check ignition coils connection.
ENGINE BACKFIRE
1. Faulty spark plugs (carbon accumulation).
– See ENGINE LACKS ACCELERATION OR POWER.
2. Exhaust system leakage.
– Contact an authorized Can-Am dealer.
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