Causes of large engine exhaust and insufficient power

1. Air filter: When the air filter accumulates too much dirt, it will cause insufficient air intake. The simple way to check is to remove the air filter, clean or replace it and then test drive.

2. Turbocharger: When the engine operation still does not improve after removing the air filter, check the turbocharger. The standard method is to measure the air supply pressure of the turbocharger to the engine.

3. Cylinder cutting: When the turbocharger is normal, the air intake fault can be eliminated. At this time, the cylinder cutting method can be used to determine the working condition of each cylinder.

4. Lower exhaust: There is very little lower exhaust when the engine is working normally. When the exhaust gas is obviously too large, it may be that the cylinder barrel, piston, and piston rings are severely worn, or the piston rings are aligned or broken. It will also cause insufficient power for exhausting smoke.

5. Cylinder pressure: If the lower exhaust is serious, a cylinder pressure test is required. Install the pressure gauge into the cylinder to be measured. Various engines have different requirements for standard cylinder pressure, but they are generally around 3MPa (30kg/cm2). At the same time, observe the spray mist. If there is no atomization or poor atomization, it can be considered that the fuel injection head is damaged.

6. Valve: For cylinders with insufficient cylinder pressure and no exhaust, check whether the valve clearance is within the standard range. If it is not, it needs to be adjusted. If it is within the standard range, there may be a valve problem, and the engine needs to be disassembled and inspected.

The above are the reasons why the engine exhausts a lot of smoke and lacks power. If you need to replace or purchase engine-related accessories, you can contact us or browse our accessories website directly. If you want to purchase XCMG brand products or second-hand machinery products of other brands, you can also consult us directly and CCMIE will serve you wholeheartedly.