Problem
Possible Cause Corrective Action
1. The fuel tank vent is
restricted.
1. Loosen the cap. If the
engine runs with the cap
loosened, replace the
cap.
2. Dirt or water is in the fuel
system.
2. Drain and ush the fuel
system; add fresh fuel.
3. The fuel lter is clogged. 3. Replace the fuel lter.
4. There is air in the fuel. 4. Bleed the nozzles and
check for air leaks at fuel
hose connections and
ttings between the fuel
tank and engine.
5. Improper fuel grade for
cold weather use.
5. Drain the fuel system
and replace the fuel
lter. Add fresh fuel of
proper grade for ambient
temperature conditions.
6. The spark arrestor screen
is clogged.
6. Clean or replace the
spark arrestor screen.
The engine starts, but does
not keep running.
7. The fuel pump is
damaged.
7. Contact your Authorized
Service Dealer.
1. Dirt, water, stale fuel, or
incorrect fuel is in the
fuel system.
1. Drain and ush the fuel
system; add fresh fuel.
2. Engine overheating. 2. Refer to Engine
Overheats.
3. There is air in the fuel. 3. Bleed nozzles and check
for air leaks at the fuel
hose connections and
ttings between the fuel
tank and engine.
4. The injection nozzles are
damaged.
4. Contact your Authorized
Service Dealer.
5. Low compression
5. Contact your Authorized
Service Dealer.
6. The injection pump
timing is incorrect.
6. Contact your Authorized
Service Dealer.
7. Excessive carbon
build-up.
7. Contact your Authorized
Service Dealer.
The engine runs, but knocks
or misses.
8. Internal wear or damage. 8. Contact your Authorized
Service Dealer.
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