How to distinguish the used car engine

How to identify the used car engine is good or bad? First: Open the cover to check the outside of the engine clean, if there is a small amount of oil and dust is normal, such as too much dust, then the vehicle may be more wear, if spotless, you must pay special attention, may be the owner to cover up Some information was carefully cleaned.

The detection of the hood is also a top priority. Inside and outside inspection are very important, especially in the hood, if there is a paint trace inside the hood or spot welding shape, size is inconsistent, then the vehicle is likely to have an accident.

Second: The oil level, color, and cover must be carefully checked. If the oil level is too high, it indicates that the engine is severely radon or leaking.

Oil color detection can be wiped with white paper. If the color is black, it is normal. For other colors, it is abnormal. When checking that there is a flap, the bottom of the cap should be observed after unscrewing the cap. For example, if the bottom of the cap is covered with a thick dark emulsion and a small droplet of water mixed with oil, the engine will not Normally, there may be damage to the cylinder head, cylinder head, or cylinder, resulting in the penetration of antifreeze into the engine oil.

If this happens, the contaminated engine oil may cause damage to the interior of the engine and the engine may need to be overhauled, which has a great impact on the price of the vehicle.

Third: Check engine coolant, battery, and air filter. The detection of the engine coolant must be performed while the vehicle is stationary because it is easily burned by the coolant if the vehicle is started. Check if there are any other foreign matter on the coolant surface. If there is oil floating, it means that organic oil may infiltrate inside. If rusted powder is found to be floating, it means that the rust inside the radiator is very serious. This affects the engine. Great.

How to identify the used car engine is good or bad? The engine is the heart of the car and provides power for the car's movement. It is related to the power, economy and environmental protection of the car. A good or bad car, mainly depends on the engine is good or bad, the engine quality can reflect the true value of used cars to a certain extent. The identification of used car engines cannot be delayed.

Floor Deck Roll Forming Machine


Floor Deck Forming Machine are beautiful and durable, with advantages of saving space and easy operation. 

We can produce the special machine, send your drawing to us, we can design for you.

We provide a one year warranty and lifelong technical support, we can send our technicians to you to give you on-site training.


Working principle:

Glavanized steel strip is made into floor deck by machine through cold-bend forming technology.



Floor Deck Sheet produced by Roll Forming Machine are widely used in construction, transportation and other industries. It is mainly used for floor of buildings.




2.Roll Forming System             

3.Cutting Device            

4.Hydraulic Station         

5.PLC control system        


Working Flow:

Loading coil – decoiling – guide feeding – main roll forming – hydrarlic cutting – finished products

Working Flow 



Technique parameters:

Processing material: aluzinc/galvanized steel/colored steel coil

Material thickness: 0.3-1.5mm

Main motor power: 4kw(can change as request) 

Pump power: 4kw

Shaft diameter: 75mm

Forming steps: 15steps and more

Roller material: high grade 45# steel, hard Chromium plating

Main frame:300H steel 

Medium plate thickness: 16mm


Material of the cutting blade:Cr12

Control system: PLC computer control

Power supply: 380V, 3 Phase, 60Hz (can change as customers request)


Our floor deck roll forming machine can greatly simplifie the production process and improve production efficiency.

Floor Deck Roll Forming Machine

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