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48 forklift engine troubleshooting methods!

2018-12-20

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48 forklift engine troubleshooting methods!

Toyota 1dz engine
1. Low rotating speed of the engine -- the battery of forklift is low in power and can be charged directly to the battery

2. Low speed of the engine - poor circuit connection - check whether the wire is loose

3. Low speed of the engine -- failure of the starter, bad contact between motor brush and commutator, bad connection of internal connection head of the starter

4. High oil pressure and poor quality of lubricating oil -- when the oil has too low viscosity or is mixed with gasoline and water, the lubricating oil should be replaced directly

5. Engine parts cannot start or start with difficulty - insufficient oil in the fuel tank or the fuel tank switch is not opened

6. Insufficient power of forklift engine parts - blocked, damaged or leaking oil supply pipeline

7. Unstable operation of the engine -- the carburetor is not working well, and the mixture is low or too thin

8. Failure of gasoline pump and oil transfer pump -- check the rupture of the skin film and the loss of connecting rod, etc

9. Fuel filter blocking - cleaning forklift filter

10. Engine body overheating or unstable operation, insufficient power or unstable operation can be judged as pump failure - check and eliminate

11. Engine parts cannot be started, difficult to start or insufficient power of the fuel pump drive device damaged

12. The fuel injection pump or ignition timing is wrong - adjust the fuel injection advance Angle, adjust the forklift engine to start easily, do not exhaust black smoke when working, do not emit metal knock (too early oil injection);
The ignition time is adjusted to: too early in the ignition when there is metal knock (sudden explosion) at the acceleration, the ignition time is too late exhaust pipe smoke or there is blasting sound.

13. The exhaust pipe of the engine has black smoke or bubbling sound - insufficient compression

14. The power of forklift engine is insufficient - the fuel tank is clogged with vent holes

15. The forklift engine power is insufficient -- the fuel oil plate is incorrect, and the fuel oil can be used first according to the engine plate number
16. If the forklift engine is underpowered or unstable - the throttle is stuck or the movement is blocked - check and remove

17. The forklift engine parts are underpowered or the body is overheated -- the cylinder is overheated

18. The power of forklift engine parts is insufficient -- the engine is overheated and the operation time is too long

19. The cylinder compression force of forklift is insufficient - the engine has not reached precision adjustment

20. The cylinder compression force of forklift truck is insufficient - the valve is closed
21. Excessive pressure on crankcase of forklift truck -- wear of cylinder sleeve

22. The cylinder compression force of forklift truck is insufficient -- the valve has poor contact with the valve seat and the sealing is not strict

23. The cylinder compression force of forklift truck is insufficient -- the piston ring is damaged, worn or ablated

24. The power of forklift engine is insufficient -- the valve clearance is too large, and the valve bump will occur. The clearance should be adjusted as required

25. The power of forklift engine parts is insufficient -- the valve clearance is too small, and the valve clearance should be adjusted according to the requirements of the engine
engine assembly
26. The cylinder compression force of forklift truck is insufficient - valve stem or valve conduit wear

27. The oil pressure is too low -- the brand name of the oil is not correct and the correct oil should be replaced

28. Insufficient power of forklift engine parts - valve wear or malfunction

29. Low oil pressure -- insufficient oil amount

30. The oil pressure is too high -- there is an error in the oil meter
31. The oil pressure is too low -- the oil pump is worn too much or the bolt is loose and leaks air

32. Low oil pressure - the relief valve of the forklift lubrication system is stuck in the open position

33. High oil pressure - the relief valve of the forklift lubrication system is stuck in the closed position

34. The oil pressure is too low - the relief valve spring of the lubrication system of the forklift is broken

35. The cylinder compression force of forklift truck is insufficient -- the valve spring is damaged

36. Engine body overheating - leakage of engine cooling system or insufficient cooling water

The engine body is overheated - the fan belt of the engine is too loose to drive the water pump

38. Engine body overheating - the thermostat is not working
39. Engine body overheating - the water pump of forklift has lost its pumping function due to failure

40. Engine body overheating - excessive scale in water jacket and blocked cooling water flow

The engine body is overheating - the radiator is fouling up

42. The oil pressure is too low -- the crude oil filter of oil sump is blocked

43. The oil pressure is too high - the main oil passage is blocked

44. The crankcase pressure of forklift truck is too high - the ventilation pipe is blocked

45. Low oil pressure - excessive clearance of crankshaft front bearing

46. Engine body overheating - valve timing is wrong
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