Question about Cars & Trucks

1 Answer

Black smoke and oil from 89 pathfinder

Cold start with choke out full, little bit of black smoke with oil spitting out exhaust.

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Filmmaker:

    Uploaded 5 video answers.

  • Expert
  • 104 Answers

Could be too much oil in the engine or bad valve seals

Posted on Dec 01, 2013

Ad

4 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
  • 68 Answers

SOURCE: black smoke from exhaust

hi nishga
im dave; hope i can help

First you need to determine if it is actually black smoke or if it is blue smoke. There are three colors of smoke that can come from the tailpipe. It is not white smoke obviously because that is easily differentiated from blue or black and generally indicates water or antifreeze leaking past the head gasket and into the compression area of the motor. White smoke is the steam of the water/antifreeze being emitted

Blue smoke is caused by engine oil entering the cylinder area and being burned along with the fuel air mixture. As with white smoke, just a small drop of oil leaking into the cylinder can produce blue smoke out the tailpipe. Blue smoke is more likely in older or higher mileage vehicles than newer cars with fewer miles. The car has many seals, gaskets, and o-rings that are designed to keep the engine oil from entering the cylinder, and one of them has failed. If too much oil leaks into the cylinder and fouls the spark plugs, it will cause a misfire(engine miss) in that cylinder, and the spark plug will have to be replaced or cleaned of the oil. Using thicker weight engine oil or an oil additive designed to reduce oil leaks might help reduce the amount of oil leaking into the cylinder.

Black smoke is caused by excess fuel that has entered the cylinder area and cannot be completely burned. Another term for excess fuel is "running rich". Poor fuel mileage is also a common complaint when black smoke comes out of the tailpipe. Black smoke out the tailpipe is the least cause for alarm. Excess fuel will usually effect engine performance, reduce fuel economy, and produce a heavy fuel odour in the engine compartment. Some of the causes of excess fuel are a carburetor that is out of adjustment which is not likely unless you have installed an aftermarket carburated system on your non-carburated car, a faulty fuel pump, a leaky fuel injector, or a faulty engine computer or emissions sensor. If black smoke is present, check the engine oil to make sure excess fuel has not contaminated it. Do not start the engine if a heavy, raw fuel smell can be detected in the engine oil. Check the above mentioned systems and after detecting the trouble replace the faulty parts and then the engine oil and filter.

Posted on Jul 20, 2008

  • 40 Answers

SOURCE: kia sedona 2.9 diesel black smoke exhaust

Black smoke from exhaust means engine getting to much gas.

Posted on Jun 01, 2009

johnjohn2
  • 5763 Answers

SOURCE: my 1994 chevy s10 blazer is running rough and on

make sure you have good fuel preasure, start with that first.

Posted on Nov 29, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Could the problem of white smoke when start up in morning be that the cold start sensor could be at fault


White smoke is actually normal Susan. It isn't smoke, it is steam.

White is steam
blue is oil
black is rich mixture

Gasoline contains water at molecular level, and when it burns it condenses through the cold exhaust system as steam vapour. You should find it disappears when the engine and exhaust is warm.

May 12, 2016 | Cars & Trucks

1 Answer

Heavy exhaust smoke coming from tail pipes while sitting still or taking off. What's the problem


Is it black? black smoke means you are burning too much gasoline could be a bad choke or even a dirty air filter.
Blue smoke means you are burning oil out of your engine
.White means water getting into crank case or pistons.

Apr 08, 2015 | BMW X5 Series Cars & Trucks

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

2 Answers

Backfire, Black smoke from exhaust, spitting and sputtering


If you have not replaced plugs start there A bad map sensor will also cause black smoke and poor running

Feb 15, 2014 | Dodge Durango Cars & Trucks

1 Answer

Late starting, thick black smoke,knocking sound and less power


Hi, sounds like the cold start system has problems, like a choke on a petrol engine that hasn't shut off when the engine is hot. When you can see black smok coming out of a diesel exhaust it is unburnt fuel that you are seeing, there is a wire on the injector pump that controls the cold start on diesels, make sure it is connected to the solenoid on the pump.

Dec 20, 2012 | Cars & Trucks

2 Answers

My mazda 626 has a strong potent smell coming from the exhaust


You don't mention what that smell is reminiscent of?

You don't mention the colour of the "smoke" and you didn't say whether the engine is petrol or diesel?

You don't mention whether the road behaviour/performance is normal?

White smoke is almost always steam or in the case of a diesel it could be an unburned fuel mist, grey/black is excess fuel and blue or grey/blue is burning oil.

Some steam is fairly normal until the engine and exhaust system is hot but excessive amounts could be one symptom of head gasket trouble. If the engine is drinking coolant and sending it through the exhaust as steam it will sometimes smell spicy.

Burning oil smells a bit like burned eggs in the frying pan.

If the car hasn't ultra-low sulphur oil and fuel the catalytic converter will convert sulphur traces into hydrogen sulphide - the bad egg gas...

Sep 27, 2017 | 1998 Mazda 626

1 Answer

I have a 2005 Nissan Altima 2.5. Thick white smoke is coming out the exhaust after a cold start. It is using a little oil. Valve seals, rings , or what?


usually white smoke means prestone leak head gasket if black rich mixture if blue oil consumption do a compression test to find the problem or check levels to see if they are low

Jan 05, 2011 | Nissan Altima Cars & Trucks

1 Answer

Black smoke from exhaust


black smoke is to much petrol ,check the choke to see if it's sticking if it got one also check air filter to make sure it,s clean. hope this helps other wise take it to a jag expert.

Jun 26, 2009 | 1995 Jaguar XJ6

1 Answer

Stalling and black smoke


Your truck is fuel injected . Black smoke indicates a rich fuel mixture. This could be caused by numerous items. A faulty sensor, a faulty injector, a misfiring spark plug are some of them. To really zone in on the problem, a computer diagnosis is required to note sensor readings, and repair as necessary.

Mar 30, 2009 | 1995 Nissan Pathfinder

3 Answers

Black smoke from exhaust


hi nishga
im dave; hope i can help

First you need to determine if it is actually black smoke or if it is blue smoke. There are three colors of smoke that can come from the tailpipe. It is not white smoke obviously because that is easily differentiated from blue or black and generally indicates water or antifreeze leaking past the head gasket and into the compression area of the motor. White smoke is the steam of the water/antifreeze being emitted

Blue smoke is caused by engine oil entering the cylinder area and being burned along with the fuel air mixture. As with white smoke, just a small drop of oil leaking into the cylinder can produce blue smoke out the tailpipe. Blue smoke is more likely in older or higher mileage vehicles than newer cars with fewer miles. The car has many seals, gaskets, and o-rings that are designed to keep the engine oil from entering the cylinder, and one of them has failed. If too much oil leaks into the cylinder and fouls the spark plugs, it will cause a misfire(engine miss) in that cylinder, and the spark plug will have to be replaced or cleaned of the oil. Using thicker weight engine oil or an oil additive designed to reduce oil leaks might help reduce the amount of oil leaking into the cylinder.

Black smoke is caused by excess fuel that has entered the cylinder area and cannot be completely burned. Another term for excess fuel is "running rich". Poor fuel mileage is also a common complaint when black smoke comes out of the tailpipe. Black smoke out the tailpipe is the least cause for alarm. Excess fuel will usually effect engine performance, reduce fuel economy, and produce a heavy fuel odour in the engine compartment. Some of the causes of excess fuel are a carburetor that is out of adjustment which is not likely unless you have installed an aftermarket carburated system on your non-carburated car, a faulty fuel pump, a leaky fuel injector, or a faulty engine computer or emissions sensor. If black smoke is present, check the engine oil to make sure excess fuel has not contaminated it. Do not start the engine if a heavy, raw fuel smell can be detected in the engine oil. Check the above mentioned systems and after detecting the trouble replace the faulty parts and then the engine oil and filter.

Jul 20, 2008 | 1996 Pontiac Firebird

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

46 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts

yadayada
yadayada

Level 3 Expert

76682 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Randy Ohler

Level 3 Expert

14585 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...