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Blue smoke is oil, and if it happens are start up, it means your piston rings are worn particuarly the bottom oil scraper ring. May be coupled with worn bores as well, depending on how many million miles you have done?
stay off hills?
slow down
what year?
what engine, 4BC2.
what country (tells me what injection system is used, )
clogged air filter.?
dragging brakes
seized wheel bearings.
Engine also smokes when car driving if turbocharger still faulty. Did you change the engine timing belt (the timing belt kit) meantime? What about engine oil consumption? When engine glow plugs (one or more) burnt then engine exhausts white smoke at idling. Also white smoke at engine idling when water is still present in diesel fuel.
White smoke usually occurs when there is not enough heat to burn the
fuel. The unburned fuel particles go out the tailpipe and typically
produce a rich fuel smell. It's not unusual to see white smoke in the
exhaust during cold weather until the engine warms up.
Faulty glow plugs or control module can cause white smoke on engine start up.
Low engine cranking speed may also produce white smoke.
If
white smoke is still visible after the engine has warmed up, the engine
may have one or more bad injectors, retarded injection timing or a worn
injection pump.
Low compression or air in the fuel system can also be a source of white smoke.
Hello!
There are two differnt reasons for black and white smoke coming from the tail pipe.
Black smoke means fuel runs rich (car getting to much gas). Check fuel pressure/air filter.
In some cases the white smoke means car is burning oil or transmittion fluid. Have tem checked/replaced.
If you can feel a smelly smoke it can be catalytic converter.
In a worsest scenario if car blowing white smoke it can be engine coolant is getting into an engine cylinder from a bad head gasket ,or a warped/cracked head. So you need to keep your eye on coolant level and check your engine for overheat. Also might be good to check your oil for traces of coolant (on a dipstick it would be a milky substance mixture of oil and coolant).
Good Luck
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