Question about 1992 Lexus Ls 400

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Black smoke why is exhaust blowing black smoke when engine is cold

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Check the oil on the oil cap, make sure you don't have water in there or it could be a blown head gasket.

Posted on Nov 27, 2008

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Posted on Jan 02, 2017

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BA Falcon LPG dedicated sudden loss of power on the highway and blowing lots of black smoke.Any help please.


Hi Alan Pearson, does not sound good. Worn valves maybe or cracked block. Suggest getting mechanic to assess and quote as engine repair as it may cost more than engine is worth to fix ?

I had this on a car that was LPG but it was a grey oil smoke and same sort of thing loss of power and then heaps of smoke.
Suggest as a simple test - putting a piece of paper in front of exhaust pipe while running engine after it has cooled down and is cold and see if any oil is being sprayed out.

May 15, 2018 | Cars & Trucks

1 Answer

What is the cause of water dripping out exhaust pipe and engine smoking excessively?


Cold weather right? Dripping is the water condensing from the exhaust gases. The "smoke" is more than likely water vapor, just like your breath in cold weather. If you have smoke (black) in warmer weather, you have an excess fuel problem and won't pass emmision tests. If blue smoke you have oil leaks into the coubustion chamber. Also will not pass emmisions test.

Mar 04, 2015 | 2003 Ford Explorer

1 Answer

Is there a mechanical problem with my 98 Ford falcon when accelerator pedal is flat to floor and when you release accelerator a puff of black smoke comes from exhaust


Probably not a problem as black smoke is a sign that too much fuel went into the engine. This is especially true when engine is cold and in choke or "cold start sequence".

Jan 26, 2015 | Ford Cars & Trucks

1 Answer

X-Trail has white smoke blowing out exhaust pipe when I start up


It's normal for cars to do this in cold weather til the engine warms up a bit. If it's not cold you might have a head gasket going bad causing antifreeze to get into the engine.

Mar 28, 2014 | Nissan XTrail Cars & Trucks

1 Answer

Motor is smoking in my '02 diamante, is it the gasket?


Smoke diagnostic is made by colour.
If u mean pistons head gasket,yes,it can smoke.
White (clear) water vapor.Ceck coolant level.Ceck engine oil colour by dipstick.

Black:runs rech on fuel (fuel filter/fuel lines/fuel mixture...)
Blue (whity):worn pistons rings.

Chears.
Tips:
Whity smoke before warming may be natural on cilli mornings with lot of compressure the engines just blows vapors.
Old oil/fuel residues in the exhaust tubing may blow smoke after heating the engine ,must track problem (...).
Black smoke on hitting the acceleration to the floor may be natural (overcharged) avoid sport driving style.

Sep 29, 2013 | 2002 Mitsubishi Diamante

1 Answer

My bmw 730d 2004 is blowing out alot of black smoke what does this mean?


Black smoke from the exhaust is an indication of the engine running too rich. Probably bad fuel injection system.

Sep 28, 2012 | 2004 BMW 730

1 Answer

100 series toyota cold start problem


If your after market turbo is blowing oil into the engine, best you have it removed. When you say that fuel may be leaking into the cylinders, it could be leaking fuel injectors. If the smoke out of the tail pipe, it's usually indicator of burning coolant. Blue smoke is indicator of fuel and black of oil.

Jun 27, 2017 | 2000 Toyota Land Cruiser

2 Answers

White smoke blowing out of exhaust?


black smoke is fuel white smoke is oil. change your spark plugs to a hotter plug and run with some hpr 50 engine oil or somrthing nice and thick

Oct 11, 2009 | 1996 Ford Thunderbird LX

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