Toro 22323G Operator's Manual page 47

Problem
The engine runs, but knocks or misses.
The engine will not idle.
The engine overheats.
There is excessive black smoke in the
exhaust.
Possible Cause
1. Dirt, water, stale fuel, or incorrect fuel
is in the fuel system.
2. The engine is overheating.
3. There is air in the fuel.
4. The injection nozzles are damaged.
5. There is low compression
6. The injection pump timing is incorrect.
7. There is excessive carbon build-up.
8. There is internal wear or damage.
1. The fuel tank vent is restricted.
2. Dirt, water, stale fuel, or incorrect fuel
is in the fuel system.
3. The air cleaner filters are dirty.
4. The fuel filter is clogged.
5. There is air in the fuel.
6. The fuel pump is damaged.
7. There is low compression
1. More coolant is needed.
2. There is restricted air flow to the
radiator.
3. The crankcase oil level is incorrect.
4. There is excessive loading.
5. The incorrect fuel is in the fuel system.
6. The thermostat is damaged.
7. The fan belt is loose or broken.
8. Injection timing is incorrect.
9. The coolant pump is damaged.
1. There is excessive loading.
2. The air cleaner filters are dirty.
3. Incorrect fuel is in the fuel system.
4. The injection pump timing is incorrect.
5. The injection pump is damaged.
6. The injection nozzles are damaged.
47
Corrective Action
1. Drain and flush the fuel system; add
fresh fuel.
2. Refer to Engine Overheats.
3. Bleed nozzles and check for air leaks
at the fuel hose connections and fittings
between the fuel tank and engine.
4. Contact your Authorized Service
Dealer.
5. Contact your Authorized Service
Dealer.
6. Contact your Authorized Service
Dealer.
7. Contact your Authorized Service
Dealer.
8. Contact your Authorized Service
Dealer.
1. Loosen the cap. If the engine runs with
the cap loosened, replace the cap.
2. Drain and flush the fuel system; add
fresh fuel.
3. Service the air filters.
4. Replace the fuel filter.
5. Bleed the nozzles and check for air
leaks at fuel hose connections and
fittings between the fuel tank and
engine.
6. Contact your Authorized Service
Dealer.
7. Contact your Authorized Service
Dealer.
1. Check and add coolant.
2. Inspect and clean the side panel
screens with every use.
3. Fill or drain to the full mark.
4. Reduce the load and use a lower
ground speed.
5. Drain and flush the fuel system; add
fresh fuel.
6. Contact your Authorized Service
Dealer.
7. Contact your Authorized Service
Dealer.
8. Contact your Authorized Service
Dealer.
9. Contact your Authorized Service
Dealer.
1. Reduce the load and use a lower
ground speed.
2. Service the air filters.
3. Drain the fuel system and refill with
specified fuel.
4. Contact your Authorized Service
Dealer.
5. Contact your Authorized Service
Dealer.
6. Contact your Authorized Service
Dealer.