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Troubleshooting

Cause Remedy
Tank empty or tank vent blocked Fill tank,bleed system, check tant vent
Air in fuel system Bleed fuel system, eliminate air leaks
Shut off/start device defective Repair or replace
Fuel filter dirty Replace fuel filter
Injection lines blocked/restricted Clean or replace
Fuel supply lines blocked/restricted Test all fuel 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 Rapair to replace
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
Low or uneven engine compression Repair as nececessary
Fuel injection pump defective or cannot be adjusted Remove pump and repair it
Cause Remedy
Tank empty or tank vent blocked Fill tank,bleed system, check tant vent
Air in fuel system Bleed fuel system, eliminate air leaks
Low idle misadjusted Readjust idle stop screw
Governor misadjusted or defective Readjust or repair
Fuel injection pump defective or cannot be adjusted Remove pump and repair it
Cause Remedy
Air in fuel system Bleed fuel system, eliminate air leaks
Injection nozzle defective Rapair to replace
Injection sequence does not correspond to firing order Install fuel injection lines in the correct order
Delivery valve leakage Replace delivery valve
Low or uneven engine compression Repair as nececessary
Governor misadjusted or defective Readjust or repair
Fuel injection pump defective or cannot be adjusted Remove pump and repair it
Cause Remedy
Tank empty or tank vent blocked Fill tank,bleed system, check tant vent
Air in fuel system Bleed fuel system, eliminate air leaks
Fuel filter dirty Replace fuel filter
Injection lines blocked/restricted Clean or replace
Fuel supply lines blocked/restricted Test all fuel 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 Rapair to replace
Overflow valve defective or blocked Clean the orifice or replace fitting
Fuel injection pump defective or cannot be adjusted Remove pump and repair it
Cause Remedy
Tank empty or tank vent blocked Fill tank,bleed system, check tant vent
Fuel filter dirty Replace fuel filter
Injection lines blocked/restricted Clean or replace
Fuel supply lines blocked/restricted Test all fuel 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 Rapair to 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 valve defective or blocked Clean the orifice or replace fitting
Timing device defective Repair or replace timing device
Low or uneven engine compression Repair as nececessary
Governor misadjusted or defective Readjust or repair
Fuel injection pump defective or cannot be adjusted Remove pump and repair it
Cause Remedy
Loose connections, injection lines leak or broken Tighten the connection,eliminate the leak
Pump-to-engine timing incorrect Readjust timing
Injection nozzle defective Rapair to 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
Timing device defective Repair or replace timing device
Governor misadjusted or defective Readjust or repair
Fuel injection pump defective or cannot be adjusted Remove pump and repair it
Cause Remedy
Shut off/start device defective Repair or replace
Governor misadjusted or defective Readjust or repair
Fuel injection pump defective or cannot be adjusted Remove pump and repair it
Cause Remedy
Air in fuel system Bleed fuel system, eliminate air leaks
Injection lines blocked/restricted Clean or replace
Pump-to-engine timing incorrect Readjust timing
Injection nozzle defective Rapair to 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
Timing device defective Repair or replace timing device
Low or uneven engine compression Repair as nececessary
Governor misadjusted or defective Readjust or repair
Fuel injection pump defective or cannot be adjusted Remove pump and repair it
Cause Remedy
Tank empty or tank vent blocked Fill tank,bleed system, check tant vent
Air in fuel system Bleed fuel system, eliminate air leaks
Fuel filter dirty Replace fuel filter
Injection lines blocked/restricted Clean or replace
Paraffin deposit in fuel filter Replace filter, use winter fuel
Pump-to-engine timing incorrect Readjust timing
Injection sequence does not correspond to firing order Install fuel injection lines in the correct order
Timing device defective Repair or replace timing device
Fuel injection pump defective or cannot be adjusted Remove pump and repair it
Cause Remedy
Low idle misadjusted Readjust idle stop screw
Maximum speed misadjusted Readjust maximum speed screw
Governor misadjusted or defective Readjust or repair
Cause Remedy
Tank empty or tank vent blocked Fill tank,bleed system, check tant vent
Air in fuel system Bleed fuel system, eliminate air leaks
Fuel filter dirty Replace fuel filter
Fuel supply lines blocked/restricted Test all fuel lines , flush or replace
Paraffin deposit in fuel filter Replace filter, use winter fuel
Pump-to-engine timing incorrect Readjust timing
Injection nozzle defective Rapair to replace
Timing device defective Repair or replace timing device
Low or uneven engine compression Repair as nececessary
Governor misadjusted or defective Readjust or repair
Cause Remedy
Overflow valve defective or blocked Clean the orifice or replace fitting