How to adjust the fuel intake of the diesel car oil pump

The specific steps are as follows:

1. Find the screws that are bolted up by the lead block on the diesel pump, unscrew the lead block shell, and take out the lead block.

2. After unscrewing, you can see two screws, one is screwed deeper, and the other is screwed shallower.

3. If the oil intake of the car is small, you can loosen the screw outward, so that the oil intake of the oil pump will increase, and the exhaust pipe will smoke when the car is started, and the oil intake can be determined by the situation of the exhaust pipe.

4. If there is black smoke from the exhaust pipe at this time, it means that the amount of oil is too large, and the fuel is not fully burned in the cylinder.

5. Be sure to pay attention when screwing, adjust it slowly, and don't screw too much.

When you feel that the fuel intake of the diesel pump of the car is small, you can try to adjust the above ways, but if you don't understand it, it is recommended not to adjust it privately, otherwise it is easy to damage the diesel engine, it is best to go to a professional repair shop to let a professional person help you adjust.

The impact of the increase in the oil supply

If there is a large difference between the maximum oil supply and the minimum oil supply on the same starter, do not rush to adjust, you can first check and compare the oil outlet valve of the two-point pump, and sometimes you can change the oil supply. If the oil supply is not changed after adjustment, the two-way pump needs to be adjusted one by one.

When the diesel engine injects too much fuel, the following fault phenomena will occur:

1. A large amount of black smoke is emitted from the exhaust pipe.

2. After the engine speed increases, the speed cannot be reduced immediately after the oil is quickly recovered; Or the vehicle encounters an obstacle at high speed and quickly refuels the vehicle, and the speed cannot be reduced immediately.

The screw cap behind the oil pump is removed with a 21 wrench, and the screw cap inside is loosened (the same is a 21 wrench) to pull the big screw rod out a little bit and then tighten the screw to increase the amount of oil, otherwise it is to adjust the oil volume (generally half a circle).

The principle of diesel vehicle oil pump:

1) Generally, the oil is stored in the oil pan, after the oil pump starts to work, the oil in the oil pan is pumped out through the volume change of the working unit (gear, rotor, blade, etc.) in the pump body, and enters the oil pump through the filter collector;

2) The oil at the outlet of the oil pump has a certain oil pressure, so that the oil can pass through the oil filter, and then enter the main oil channel and various parts that need to be lubricated (pistons, valves, camshafts, etc.).The oil pump acts as the heart of the lubrication system.

The air intake is large and the mixture is too thin, so the engine feels weak, so the oil supply of the oil pump is increased, the oil intake increases, the mixture is thick, and the engine feels strong.

When adjusting the oil supply, it should be ensured that the oil supply shall not be higher than the standard oil supply. This is due to the fact that the adjustment is carried out at low speeds, taking into account the influence of many factors such as oil leakage;

At this moment, it is promised that there is a large unevenness (30%), but at high speeds, it is affected by factors such as the saving effect, and the unevenness of the promise is small (3%). If the oil volume at low speed is higher than the normal oil supply, the high speed oil volume may change significantly or even exceed the additional oil supply.

Summary. Hello, dear <>

Generally speaking, increasing the fuel intake is not the fuel supply, and the fuel consumption will not increase if the power is not increased. It should be said that the large amount of oil return of diesel vehicles is not directly related to whether it consumes fuel or not. The oil return of diesel vehicles is the inevitable result of the fuel supply of the high-pressure oil pump of the diesel engine being greater than the fuel injection of the injector.

Therefore, as long as the power of the diesel engine is not affected, there is no big problem with large oil return. If the amount of oil return is large and the power of the diesel engine is also shown as insufficient, there may be a problem with the injector and needs to be further inspected and confirmed and repaired as appropriate. Therefore, the large amount of fuel return of diesel vehicles does not necessarily cost fuel.

Is it a fuel consumption after the diesel car oil pump increases the fuel intake?

Hello, dear <>

Generally speaking, increasing the fuel intake is not the fuel supply, and the fuel consumption will not increase if the power is not increased. It should be said that the large amount of oil return of diesel vehicles is not directly related to whether it consumes fuel or not. The oil return of diesel vehicles is the inevitable result of the fuel supply of the high-pressure oil pump of the diesel engine being greater than the fuel injection of the injector.

Therefore, as long as the power of the diesel engine is not affected, there is no big problem with large oil return. If the amount of oil return is large and the power of the diesel engine is also shown as insufficient, there may be a problem with the injector and needs to be further inspected and confirmed and repaired as appropriate. Therefore, the large amount of fuel return of diesel vehicles does not necessarily cost fuel.

My diesel engine has a low amount of oil and is not good to start.

It would be nice if it was turned up.

Hello, dear <>

In the case of lack of engine oil, it will cause local or even all of the lubricating oil can not be effectively transmitted to the high-speed friction of the mechanical surface, resulting in local or all continuous high temperature, and even high heat causes local burning and melting, such as oil rings, air rings, pistons, cylinder liners, large and small tiles, cranks, connecting rods, crankshafts may cause high temperature adhesion, and even the examples of engine destruction are not a few, the correct way is: when the engine is found to be short of oil, it is necessary to turn off the engine on the spot and wait, after adding oil, try to start the ignitionObserve the operation of the engine, water temperature, oil pressure, running sound, etc., and then increase the throttle slightly, continue to observe, and wait until the engine is normal, you can start driving, such as water temperature, oil pressure, and running sound are abnormal, you should immediately turn off the engine and wait for rescue.

How to adjust the oil supply of the oil pump The method of adjusting the oil supply of the fuel injection pump is as follows: 1. There is a small rectangular cover at the back of the oil pump, with a wrench.

Disassemble the small cover, there are two screws inside the small cover, and the top is clockwise for adjusting the amount of oil.

It is to increase the amount of oil supply, counterclockwise is to reduce the amount of oil supply, twist half a circle at a time, slowly debug, and the following screws are to adjust the idle speed.

Target; 2. The fuel injection pump is the most important component of the diesel engine and is regarded as the diesel engine.

The "heart" part. The fuel injection pump composition is usually a whole composed of fuel injection pump, governor and other components installed together. Among them, the governor is a component that ensures the low-speed operation of the diesel engine and the limit of the maximum speed, and ensures that a certain relationship between the injection amount and the speed is maintained.

Once there is a problem with the fuel injection pump, the whole diesel engine will work abnormally; 3. There are three categories of fuel injection pumps, such as in-line type, distribution type and single type, no matter which category, the key to fuel injection pump lies in the word "pump". The quantity, pressure and timing of the pump oil are very precise and automatically adjusted according to the load. Fuel injection pump is a finely processed, complex manufacturing process components, at present, the general automotive diesel engine fuel injection pump at home and abroad are produced by a few professional factories in the world.

The amount of oil supplied can be changed by turning the plunger by turning the plunger with a fork or rack and changing the effective oil supply stroke of the plunger. The mechanical pump can adjust the tooth stroke in the fuel injection pump to make it larger, so as to increase the fuel supply and make the vehicle more powerful. It is recommended to find a professional to adjust, otherwise it is likely to cause some unnecessary trouble.

The EFI truck cannot be adjusted externally, and the fuel injection volume can be rewritten by flashing the ECU program, and the 336 can be brushed to 375.