Auto School: engine speed when the air conditioning not cold enough?

Auto School: engine speed when the air conditioning not cold enough?
1Bmw GT1
Bmw OPS

Float covered with painted butter oil, have hidden it?

Readers Mok Q: My car in the 4S shop maintenance, replacement oil tank float, float cover maintenance personnel in the oil multi-coated with a layer of butter, is this a risk it?

Re: If you can ensure proper installation, is the need to use butter. Tank with separate ventilation body, it is not sealed, but the location is certainly the oil float to cover completely sealed.

As the butter can be dissolved in gasoline, a small amount of butter and squeeze the tank, there would be no problem. But if a lot of butter dissolved in gasoline will lead to incomplete combustion of gasoline, resulting in carbon deposition.

2

Swing around the steering wheel when braking is how is it?

Readers Xu Q: Recently while driving, the car felt the brake, the steering wheel will swing around, is this a problem?

Re: There are many reasons for this phenomenon will have, such as: brake disc is not flat, unilateral shock damage, suspension and steering-linked institutions Songkuang or sleeve damage, location, etc. are not allowed. You can drive the truck back to the Automobile Factory to do the inspection system, and gradually exclude doubt, to troubleshooting.

3

Engine speed when the air conditioning not cold enough?

Readers wheat Q: My car nearly five years, the summer air conditioning worked well, can sometimes block low speed or in advance plus the uphill feels underpowered encountered when air is not blowing out, how does that matter?

Re: air conditioning compressor is driven by the engine to. High engine speed, compressor speed is high, the corresponding refrigerant cycle soon, take away the heat, the more so the air felt cool. When the engine speed drops, the compressor speed is reduced accordingly, also reduces the refrigerant cycle, this time away will reduce the heat, the air will feel less cold.

4

Car has scratches how to claim?

Readers Lin Q: I just bought a new car, recently parked in the parking lot area, who are wicked scratching with a sharp object, is this ability to get insurance claims?

Re: Can you look at the key insurance claims a "scratch risk." Caustic provision that no significant traces of collision body scratches, the insurance company is not responsible for compensation; and body scratches insurance clause provides that no significant traces of collision body scratches, the insurer liable for compensation. Meanwhile, the body scratches insurance also provides protection malicious body scratches