One day, my friend and I were search for obd2 tool for my car from Obd2express.co.uk, we have see the black smoke from her cars’ when her brother were driving. Suddenly, I asked her brother, what is the reason to take the black smoke, white smoke, blue smoke in your car?
Her brother told me; Note the engine exhaust mixture is too thick black smoke leading to incomplete combustion. When the airs filter too dirty, bad spark plugs, ignition coil failure, etc., it will cause the engine black smoke. And white fume exhaust pipe injector bad note or drop of oil to make part of the gasoline does not burn; gasoline in water; cylinder head and cylinder liner have invisible cracks in the cylinder head gasket damage to water; machine temperature is too low. Can be resolved by the following methods: clean or replace fuel injector, adjustment of fuel injection pressure; remove the tank and the oil line in the water; do not buy cheap low-quality oil; replacement cylinder head gasket, cylinder cover, cylinder head. In addition, Renault can clip diagnostic tool also often can be used to the tool, you can check the reason with them.
When the oil ran into the combustion chamber from the open space and oil entering the combustion chamber to participate in combustion, from the gap will take blue smoke. Using the Car diagnostic tool check reason will save you more time.