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Emissions and Exhaust Systems

Internal combustion engines have byproducts called emissions. These byproducts are either particulates or gaseous chemicals. Emissions travel from the engine via an exhaust system, which is a system of pipes that leads the emission away from the combustion source.

1,423 Questions

Why does your exhaust blow black smoke?

Black smoke from the exhaust it a symptom of an overly rich fuel/air mixture. Have this repaired or it will destroy your O2 sensor and catalytic converter.

What should you check for a P260F Diagnostic code?

This is a powertrain code that signals an evaporation system monitor performance issue.

What is the cause of a big cloud of white smoke when you first start your car up?

Possibly oil rings broken or valve stem seal/valve seats worn out. Test for compression and gasket leaks.

What would cause black smoke to come from the tailpipe of a 97 Chevy Cavalier?

Black smoke usually means the engine is running too rich. The fuel/air mixture is incorrect. Blue smoke is oil burning.

Is black smoke in diesel bad?

black smoke comes from excessive fuel. could be a sign of its not getting burnt Which could be bad. usually you get this after people start cranking up a diesel for more power, of corse your gonna need more fuel to go with all those extra pony's!

Is denatured alcohol safe to put in the gas tank of a vehicle?

No Never, you must use Fuel 90, 92 or 95 (and Higher), but some Cars needs Diesel Like Hyundai H1.

Warning!:: If you used Fuel 80 your Car will be completly destroyed and it won't go to up to 120 KM/H.

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Note:: Better Feul (95 or 98 etc...) Costs more money I use 92.

97 turbo talon and it has white smoke that smells like oil coming out the exhaust it seemed to start after i adjusted the Blow Off Valve dont know if that would affect it what could it be?

It could DEFINITELY cause it, I am not saying that you can not modify your engine, Just keep in mind that an engine is an air pump, and The piston comes up to top dead center, (NOTICE THE USE OF THE WORD,DEAD) when the piston is down it has about as much volume as A drinking glass in the cylinder, When it is up, it has about as much as you would have in your mouth, NOT CAN HOLD, WOULD HAVE IN YOUR MOUTH WHEN DRINKING WATER,The TURBO CHARGER compresses the air BEFORE the engine gets it, So what would normally be equal to A GLASS of FUEL/AIR MIXTURE, Is now equal to A 2 liter bottle, When you "ADJUST" the pop off, Or really tighten it up, You do not let the EXCESS air escape before it hurts your engine, You definitely need to "READJUST" the pop off, at least A littly, KEEP IN MIND, you may have already broken rings, or piston, or bent rods, or blown headgasket, For your sake I hope not,REALLY GOOD LUCK, Jamison

What does error code P0463 mean?

Trouble code P0463 means:Fuel level sensor circuit high input

What does it mean when black smoke comes out the exhaust and the car starts going about 30 MPH?

sounds like it could be your oxygen sensor. If it was me I'd replace it. If you smell a strong odor of gas, it could be your MAP sensor. You might also have a bad pickup in the distributor. Good luck.

What causes thick black smoke?

Thick black smoke can be produced by a variety of things, including the burning of some kinds of plastic.

1988 Silverado 12 ton 150000 miles when running a lot of white smoke comes out of tail-pipe It does this when you start it or when driving what causes this?

White smoke is an indicator you have a head gasket leak. The white smoke is actually water or coolant mixing into the combustion chamber with the fuel and air. Have you noticed a bit of a rough idle? Have you looked at your coolant level lately?

What is causing white smoke to come out of the exhaust for a few seconds when you first start your car?

White Smoke from ExhaustA little whitish vapor in the first few seconds after start-up is nothing to worry about; it's condensation being blown out of the exhaust system and will quickly disperse. Smoke that persists, however, is cause for concern.

* Black smoke comes from partially burned fuel. This indicates that the air filter or fuel system needs to be serviced.

* Blue smoke indicates burning oil is a bad sign. Clouds of blue smoke on start-up may indicate worn valve-guide seals, valves, or piston rings, the latter of which can mean a cylinder-head or engine rebuild is needed.

* Billowy white smoke may indicate that coolant is getting into the engine. Another bad sign. This can be a result of a blown head gasket, damaged cylinder head, or even a cracked block. All are expensive repairs.

What is the purpose of a exhaust silencer?

To silence the exhaust. Noisy cars disturb the peace and if loud enough your car won't pass inspection and cops will find a liking to you.