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Main | Distributor Type Injection Pump
Starting Problem [Back to Main Menu]
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| Improper fuel (gasoline) in tank | Drain tank, flush system, fill with proper fuel |
| Tank empty or tank vent blocked | Fill tank / bleed system. check tank vent |
| Air in the fuel system | Bleed fuel system, elimitate air leaks |
| Voltage supply malfunction / stop solenoid defective | Correct electrical faults / replace stop solenoid |
| Fuel filter blocked | Replace fuel filter |
| Injection lines blocked / restricted | Drill to nominal I.D. or replace |
| Fuel-supply lines blocked / restricted | Test all fuel supply lines - flush or replace |
| Loose connections, injection lines leak or broken | Tighten the connection, eliminate the leak |
| Paraffin deposit in fuel filter | Replace filter, use Winter Fuel |
| Pump-to-engine timing incorrect | Readjust timing |
| Pre-heating system defective | Test the glow plugs, replace as necessary |
| Injection sequence does not correspond to firing order | Install fuel injection lines in the correct order |
| Cold-start device malfunction | Check cold-start mechanism |
| Low or uneven engine compression | Repair as necessary |
| Fuel injection pump defective or cannot be adjusted | Replace |
Engine Surges at Idle [Back to Main Menu]
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| Tank empty or tank vent blocked | Fill tank / bleed system. check tank vent |
| Air in the fuel system | Bleed fuel system, elimitate air leaks |
| Pump rear support bracket loose | Replace as necessary |
| Overflow fitting interchanged with inlet fitting | Install fittings in their proper positions |
| Cold-start device malfunction | Check cold-start mechanism |
| Fuel injection pump defective or cannot be adjusted | Replace |
Rough Idle When Engine is Warm [Back to Main Menu]
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| Improper fuel (gasoline) in tank | Drain tank, flush system, fill with proper fuel |
| Air in the fuel system | Bleed fuel system, elimitate air leaks |
| Pump rear support bracket loose | Replace as necessary |
| Injection nozzle defective | Repair or replace |
| Injection sequence does not correspond to firing order | Install fuel injection lines in the correct order |
| Low or uneven engine compression | Repair as necessary |
| Fuel injection pump defective or cannot be adjusted | Replace |
Engine Misses Under Load [Back to Main Menu]
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| Improper fuel (gasoline) in tank | Drain tank, flush system, fill with proper fuel |
| Tank empty or tank vent blocked | Fill tank / bleed system. check tank vent |
| Air in the fuel system | Bleed fuel system, elimitate air leaks |
| Fuel filter blocked | Replace fuel filter |
| Injection lines blocked / restricted | Drill to nominal I.D. or replace |
| Fuel-supply lines blocked / restricted | Test all fuel supply lines - flush or replace |
| Loose connections, injection lines leak or broken | Tighten the connection, eliminate the leak |
| Paraffin deposit in fuel filter | Replace filter, use Winter Fuel |
| Pump-to-engine timing incorrect | Readjust timing |
| Injection nozzle defective | Repair or replace |
| Overflow fitting interchanged with inlet fitting | Install fittings in their proper positions |
| Fuel injection pump defective or cannot be adjusted | Replace |
Low Power [Back to Main Menu]
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| Improper fuel (gasoline) in tank | Drain tank, flush system, fill with proper fuel |
| Tank empty or tank vent blocked | Fill tank / bleed system. check tank vent |
| Fuel filter blocked | Replace fuel filter |
| Injection lines blocked / restricted | Drill to nominal I.D. or replace |
| Fuel-supply lines blocked / restricted | Test all fuel supply lines - flush or replace |
| Loose connections, injection lines leak or broken | Tighten the connection, eliminate the leak |
| Pump-to-engine timing incorrect | Readjust timing |
| Injection nozzle defective | Repair or replace |
| Engine air filter blocked | Replace air filter element |
| Injection sequence does not correspond to firing order | Install fuel injection lines in the correct order |
| Maximum speed misadjusted | Readjust maximum speed screw |
| Overflow fitting interchanged with inlet fitting | Install fittings in their proper positions |
| Low or uneven engine compression | Repair as necessary |
| Fuel injection pump defective or cannot be adjusted | Replace |
Excessive Fuel Consumption [Back to Main Menu]
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| Pump-to-engine timing incorrect | Readjust timing |
| Injection nozzle defective | Repair or replace |
| Engine air filter blocked | Replace air filter element |
| Injection sequence does not correspond to firing order | Install fuel injection lines in the correct order |
| Low idle misadjusted | Readjust idle stop screw |
| Cold-start device malfunction | Check cold-start mechanism |
| Fuel injection pump defective or cannot be adjusted | Replace |
Engine Cannot be Shut Off [Back to Main Menu]
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| Voltage supply malfunction / stop solenoid defective | Correct electrical faults / replace stop solenoid |
Poor Performance, Black Smoke or Low Power [Back to Main Menu]
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| Improper fuel (gasoline) in tank | Drain tank, flush system, fill with proper fuel |
| Air in the fuel system | Bleed fuel system, elimitate air leaks |
| Injection lines blocked / restricted | Drill to nominal I.D. or replace |
| Pump-to-engine timing incorrect | Readjust timing |
| Injection nozzle defective | Repair or replace |
| Engine air filter blocked | Replace air filter element |
| Injection sequence does not correspond to firing order | Install fuel injection lines in the correct order |
| Cold-start device malfunction | Check cold-start mechanism |
| Low or uneven engine compression | Repair as necessary |
| Fuel injection pump defective or cannot be adjusted | Replace |
Fog-Like Exhaust in Full-Load Range (White or Blue) [Back to Main Menu]
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| Improper fuel (gasoline) in tank | Drain tank, flush system, fill with proper fuel |
| Tank empty or tank vent blocked | Fill tank / bleed system. check tank vent |
| Air in the fuel system | Bleed fuel system, elimitate air leaks |
| Fuel filter blocked | Replace fuel filter |
| Injection lines blocked / restricted | Drill to nominal I.D. or replace |
| Fuel-supply lines blocked / restricted | Test all fuel supply lines - flush or replace |
| Paraffin deposit in fuel filter | Replace filter, use Winter Fuel |
| Pump-to-engine timing incorrect | Readjust timing |
| Overflow fitting interchanged with inlet fitting | Install fittings in their proper positions |
| Fuel injection pump defective or cannot be adjusted | Replace |
Incorrect Idle or Maximum Speed [Back to Main Menu]
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| Low idle misadjusted | Readjust idle stop screw |
| Maximum speed misadjusted | Readjust maximum speed screw |
| Overflow fitting interchanged with inlet fitting | Install fittings in their proper positions |
| Cold-start device malfunction | Check cold-start mechanism |
| Fuel injection pump defective or cannot be adjusted | Replace |
Engine Does Not Rev Up [Back to Main Menu]
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| Improper fuel (gasoline) in tank | Drain tank, flush system, fill with proper fuel |
| Tank empty or tank vent blocked | Fill tank / bleed system. check tank vent |
| Air in the fuel system | Bleed fuel system, elimitate air leaks |
| Fuel filter blocked | Replace fuel filter |
| Fuel-supply lines blocked / restricted | Test all fuel supply lines - flush or replace |
| Loose connections, injection lines leak or broken | Tighten the connection, eliminate the leak |
| Pump-to-engine timing incorrect | Readjust timing |
| Overflow fitting interchanged with inlet fitting | Install fittings in their proper positions |
| Cold-start device malfunction | Check cold-start mechanism |
| Low or uneven engine compression | Repair as necessary |
| Fuel injection pump defective or cannot be adjusted | Replace |
Injection Pump Runs Hot [Back to Main Menu]
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| Overflow blocked | Clean the orifice or replace fitting |