answersLogoWhite

0


Best Answer

perhaps the choke is stuck or may be running rich, sometimes the plugs arn't in the right heat range

User Avatar

Wiki User

16y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why is there a black substance coming out of the exhaust pipe when vehicle is running?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Should you stop driving vehicle if white smoke is coming from exhaust?

yes


Where might exhaust fumes be coming from that are getting into the vehicle through the 4x4 shift boot?

The fumes are most likely coming from an exhaust leak. The leak could be at the converter, or somewhere else in the exhaust system.


Would like know where the catalytic converter is located on the vehicle?

Underneath the vehicle connected to the exhaust pipe coming from the engine. If you look under the vehicle you will see it.


Is it normal for water to be coming out your exhaust on a 5.7 suburban. No AC?

Water condensation coming from the exhaust is normal when the vehicle has been sitting in a wet area, but should stop once it is warmed up. Water from the exhaust after it is warmed up and white smoke from the exhaust is an indication of a blown head gasket.


What are catalytic converters and where are they found?

A Catalytic Converter is used to clean the fumes of the exhaust emmisions coming out of a motorised vehicle.


Why does your exhaust leak fuel?

Tough question without knowing more info. But, if you are talking about fluid coming out the end of the exhaust pipe when the car is running............its not fuel, its water!


You have black smoke coming from your exhaust?

You are running too rich. the mixture of fuel and air has too much fuel in it,


White smoke coming out of exhaust?

if there is white smoke ur vehicle is either burning oil or it is moisture in the gas chamber


Why Oil coming out of exhaust while car is running?

engine is burning oil could be valve seals or piston rings


How do you know when your head gaskets are bad?

You may have bad head gaskets when,you are losing engine coolant and you don't see any leaks. you see a white smoke (steam) coming from the exhaust pipe. you have a sweet smell coming from the exhaust pipe. you see air bubbles in the radiator coolant with the radiator cap off and engine running. you see a milky substance collecting on the engines dip stick and/or engines oil cap..


How do you locate your catalytic converctor?

Crawl under the vehicle and look up. You will see the converter connected to the exhaust pipe coming from the engine.


How do you tell if its condensation or smoke coming from exhaust?

If it stops after a minute or two, it was condensation. If it continues the whole time the engine is running, it's smoke.