1.1.4 High fuel consumption 9 The delivery valve is damaged. Replace the delivery valve The timer is broken. Repair or replace the timer The cam is worn. Replace the worn cam The control lever doesn’t work well. Adjust or replace the control lever The injection timing is not correct. Adjust injection timing Repair or replace the injection pump timer The governing spring is too soft. Replace the governing spring The plunger is worn. Replace the plunger assembly Compression pressure The gasket of cylinder head is worn. The cylinder liner is worn. The piston ring is sticky. Replace relevant parts Valve clearance The valve clearance is not proper.
Adjust the valve clearance Valve spring The valve spring is too soft or broken. Replace the valve spring Exhaust system The exhaust pipe is clogged. Clean the exhaust pipe Seal of full-load adjusting screw The seal of adjusting screw is opened or improperly adjusted. Properly adjust the seal of adjusting screw and seal again Check Causes Remedies Fuel system There is a fuel leak. Repair or replace corresponding parts of fuel system Air filter An air filter component is clogged. Clean or replace the air filter component Idle speed The idle speed is not adjusted properly. Adjust the idle speed Fuel injector The opening pressure of fuel injector is too low. Atomizing is bad.
Adjust or replace the fuel injector Fuel injection timing Fuel injection timing is not correct. Adjust the fuel injection timing Injection pump The damage of delivery valve results in fuel dripping after injection. Replace the delivery valve Valve clearance The valve clearance is not proper. Adjust the valve clearance Compression pressure The gasket of cylinder head is worn. The cylinder liner is worn. The piston ring is sticky. Replace relevant parts Valve spring The valve spring is too soft or broken. Replace the valve spring