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如何选购二手的汽车

　　White smoke can be. Ignored if the engine is cold, but once it is warmed up, white smoke can mean a leaking head gasket : expensive. Reject this car.

　　After the engine has warmed, shut it off, and then go wipe your finger inside the tailpipe . The residue should be whitish-gay. If you get a black, oily mark, refuse the car its probably an oil burner.

　　Restart the engine and check the oil in an automatic transmission. It should be clean and clear, with no burned odor. The test drive

　　The salesman may try to convince you that a short drive around the block is enough. Wrong. Make it clear that you plan to road test the car, and if he isnt happy with this look elsewhere.

　　The test route you have mapped out should include dry city streets, a freeway, a hill, a bumpy road and an empty parking lot. All gauges should read steady and normal throughout the test, especially oil pressure and engine heat. If not, dont buy the car.

　　Drive to a traffic-free city street on your predetermined route and then accelerate smoothly to about 35 miles per hour. The automatic transmission should shift without jerking and with no noise.

　　Slow to about 7 m. p. h. by gently applying the brakes. There should be no noise, no sharp sound or grinding. The car should slow in a straight line, with no pulling to the right or left.