What should I do if the exhaust gas is still big after engine overhaul?

1. Adjust the timing of the high-pressure pump. The tail gas is probably due to insufficient combustion. The tail gas is black. If it is blue, you can readjust the valve clearance or check whether the four groups match. When installing four sets, try to do it at low temperature.

2. Take out the air filter to see if it is blocked or dirty. Remove the choke and try it where the choke pump is taught to see if there is something wrong with the choke pump. For the problem of valve clearance, just adjust the valve clearance.

3. The diesel pump has a large fuel injection, the air filter element is blocked, the valve clearance is improper, and the oil nozzle drips. The pressure of large hydraulic pump is incorrect or improperly adjusted. It may be that the air filter is not clean, resulting in insufficient air intake. When checking the air filter, check the inside of the intake pipe to see if there is any damage.

Extended data:

Remove throttle sludge

There are many reasons for fouling at the throttle, some of which are carbon deposits formed by the exhaust gas from fuel combustion at the throttle; Then, impurities that are not filtered by the air cleaner will remain on the throttle. Too much sludge will cause air resistance and increase fuel consumption.

He said that the car should clean the throttle when driving 10000 to 20000 kilometers. When cleaning the throttle valve, first remove the intake throat to expose the throttle valve, remove the negative electrode of the battery, turn off the ignition switch, straighten the throttle plate, spray a small amount of "carburetor cleaner" into the throttle valve, and then carefully scrub it with polyester rag or high-spinning "non-woven fabric".

Where your hands can't reach, you can put a rag on it and scrub it carefully. After cleaning, install the intake pipe and the negative electrode of the battery to ignite!

Clean the carbon deposit on the fuel injector.

Because the combustion chamber is easy to produce carbon deposit, it is difficult to start; Carbon deposition in the fuel nozzle will also lead to oil blockage, gasoline injection deformation, poor atomization, and fuel consumption will naturally increase.

For the cleaning of the combustion chamber, a special carbon remover can be used to soften the carbon deposits on the combustion chamber and the fuel nozzle and separate them from the surface of the parts, and then remove the softened carbon deposits. This method of removing carbon has a good effect. Compared with the previous direct wiping, it has the advantage of not damaging the surface of parts, and the efficiency of removing carbon has also been greatly improved.