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 flush the fuel system; add
fresh fuel.
3. The fuel filter is clogged.
3. Replace the fuel filter.
4. There is air in the fuel.
4. Bleed the nozzles and check for air
leaks at fuel hose connections and
fittings between the fuel tank and
engine.
5. The fuel grade is improper for cold
weather use.
5. Drain the fuel system and replace
the fuel filter. 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 flush the fuel system; add
fresh fuel.
2. There is air in the fuel.
2. Bleed nozzles and check for air leaks at
the fuel hose connections and fittings
between the fuel tank and engine.
3. The injection nozzles are damaged.
3. Contact your Authorized Service
Dealer.
4. There is low compression.
4. Contact your Authorized Service
Dealer.
5. The injection pump timing is incorrect.
5. Contact your Authorized Service
Dealer.
6. There is excessive carbon buildup.
6. Contact your Authorized Service
Dealer.
The engine runs, but knocks or misses.
7. There is internal wear or damage.
7. Contact your Authorized Service
Dealer.
1. The fuel tank vent is restricted.
1. Loosen the cap. If the engine runs with
the cap loosened, replace the cap.
2. Dirt, water, stale fuel, or incorrect fuel
is in the fuel system.
2. Drain and flush the fuel system; add
fresh fuel.
3. The air cleaner filters are dirty.
3. Service the air filters.
4. The fuel filter is clogged.
4. Replace the fuel filter.
5. There is air in the fuel.
5. Bleed the nozzles and check for air
leaks at fuel hose connections and
fittings between the fuel tank and
engine.
6. The fuel pump is damaged.
6. Contact your Authorized Service
Dealer.
The engine does not idle.
7. There is low compression.
7. Contact your Authorized Service
Dealer.
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