Judge the situation of the car from tail gas color

The tail gas that observes engine discharges smoke, it is the good method that judges car health condition. Should observe only seasonable, find out appropriate method and measure not hard, give breakdown eliminate.

Discharge black smoke

Breakdown phenomenon: In car travel, engine vent-pipe risks black smoke, vent-pipe (muffler) have unusual sound.

Diagnose with eliminate: 1, if engine vent-pipe eduction is many black smoke, accompany have blowout sound, can concluding is to mix gas to cross thick be caused by. Answer to check block air door in time to be opened whether completely, undertake high speed is overhauled when necessary. Look from carburettor mouth after flameout advocate spray pipe, if have oily outpour or dribble, criterion oily area of carburettor float chamber is exorbitant, should adjust formulary range, screw or change advocate quantity aperture. Air filter jams, should be cleaned or change.

2, be like engine vent-pipe eduction a few black smoke, accompany those who have rhythm " dash forward dash forward " sound, can concluding is minority crock do not work or ignite when break accurate be caused by. Usable chase crock of law that snap fire to find out do not work air cylinder, or check corrective ignition when.

Row Bai Yan

Breakdown phenomenon: Eduction of vent-pipe of the engine in car travel is many Bai Yan. One kind is ivory smoke, another kind is lunt white smoke, and vent-pipe mouth has drip.

Diagnose with eliminate:

1, the car of winter or monsoon park the first time when starting, often can see a Bai Yan. This nevers mind, once engine temperature is elevatory, bai Yan can disappear, this state need not be overhauled. The vent-pipe after be like engine temperature to lift turns into a black smoke, show air cylinder pressure crosses low or individual crock not to work, should grant to check and eliminate.

2, eduction of the vent-pipe when engine runs is many lunt Bai Yan, whether should there be seeper inside examination gasoline tank, examination air cylinder is filled up whether whether does damaged, cylinder body have sealing ring of crackle, cylinder bushing good etc.

Discharge blue smoke

Breakdown phenomenon: Vent-pipe of the engine in car travel discharges blue smoke or grey smoke, smell flavour of anxious bad smell.

Diagnose with eliminate:

1, if engine uses time longer or the overhaul that already obtained a provision is removed course of development (picture parameter) , engine power is insufficient, main reason is annulus of piston, piston wears away badly, sealing is poor and change engine oil, should send a garage to undertake heavying repair.

2, if engine power performance is good, answer to check engine oil pressure above all, if engine oil pressure is exorbitant,should give adjust. Feet of examination engine oil sees fat face exorbitant, if fat face is exorbitant, should discharge the engine oil of excessive. Examination air filter sees filter core whether jam, if be jammed,should be cleaned or change filter core. Oily plane of examination air filter is exorbitant, if oily plane is exorbitant,should discharge the engine oil of excessive.
Previous12 Next