One. The pressure is less than the oil pressure
1. body cavity oil passage there are blisters, or process oil hole is not blocked, resulting in sealing.
No oil or too little in the 2. oil pan
3. because the temperature of the machine is too high, the oil is too thin or the water and diesel oil is mixed into the oil.
4. sets of filter screen plugging or oil road plugging
5. oil pump gear wear to reduce pump oil
6. the gap between the parts is too large and the wear is serious.
7. machine installed anti pad
8. pressure meter sensor damage or connection break
9. machine filter pressure valve
10. set filter oil hole plugging (high oil temperature, low oil pressure)
The result will result in the bad performance of the diesel engine, so that the phenomenon of burning and holding shaft will occur, so that the work of the diesel engine is not normal.
Judge: oil (oil dilute water within the color brown. With water) diesel engine oil, take a piece of paper to take a small amount of oil by fast diffusion, and the middle was black, spread around in the area with lighter color, color shades have obvious boundary.

Two. Difficulties in starting
Oil system
1.. Open circuit oil blocking. The oil joint seal is not good. No oil in the fuel tank.
2. firewood filter plugging, low temperature diesel viscosity and poor fluidity.
3. there is air in the fuel system
4. oil supply angle is wrong
5. failure of high pressure oil pump (excessive clearance of rack card, etc.)
6. nozzles or bad atomization, the pressure of the oil nozzle does not meet the requirements.
7. the semicircular key of the cam shaft of the oil pump shedding or the bolt not tightened
8. oil pump joint bolt loading (Dan Xiangfa)
Gas distribution system
1. crankshaft revolving moment is large
Improper adjustment of 2. valve clearance
3. gear is incorrect and not marked.
4. inlet vent plug
5. the diesel engine has serious wear and tear, and the compression ratio becomes larger.
6. low idle and no oil supply
Three, lower exhaust
1. sticking cylinder and burning tile.
2. piston cylinder hole matching gap excess or serious wear and tear
3. piston ring is mistaken and leaking.
4. oil supply angle is large
5. sports pieces bite
6. there is a small amount of water in the oil
7. cylinder pad ablative or flushing - seal failure
8. due to slight scuffing load caused by high or high temperatures continue to run
9. poor lubrication
Four. Insufficient power
1. pipe air or blocked filter filter clogging.
2. oil supply angle is not allowed
3. the atomization of the mouth is bad, the card is dead, the pressure is insufficient.
4. lack of oil supply at the maximum position of high pressure oil pump
5. the vibration of the diesel engine makes the oil pump rack jitter cause the fluctuation of the torque value of the oil pump oil.
6. valve clearance is not right, the parts are too worn.
7. air filter cartridge plug
8. exhaust pipe muffler plugging. Valve leakage. Piston ring. Cylinder liner wear cylinder compression pressure is insufficient.
9. the environment is too high or exorbitant
10. clutch friction plate slips and the throttle wire is not in place.

11. turbocharger compensator leads to the cracking of the trachea, the air inlet pipe is leaking, and the performance is not good.