oskinosmee
Member
- :
- 07 mazdaspeed 3
What exhaust doesnt smell? In the morning when its cold my car as every other car in the world will smoke.
exhaust smoking problem? *VID*
- Thread starter NYXphil13
- Start date
What exhaust doesnt smell? In the morning when its cold my car as every other car in the world will smoke.
MS3-oholic
Member
That's condensation. All cars do that when it is cold and wet outside.
SPEED3TYPE2
Member
white smoke = water, blue smoke = oil...
SPEED3TYPE2
Member
??? maybe somehow water is getting in there? you know about fuel shooting out the tailpipe under hard acceleration right.. sure its not just fuel?
SPEED3TYPE2
Member
yeah thats what it is.. its normal, its fuel, when you floor it fuel escapes out tthe tail pipe..
SPEED3TYPE2
Member
all cars shoot fuel out the tail pipe when you floor it its completely normal
cosmic_spd3
Member
- :
- 08 Speed3..Cosmic Blue Mica
Well the mazdaspeed 3 is a rich running car..i several times see a greyish black smoke coming out the tail pipe when i get on it hard..it's know as the unburned fuel from the engine or carbon build up..white smoke in the morning is normally condensation in cold temps...or when u blow a head gasket where ur oil and antifreeze mixes..i VERY MUCH doubt that right now on these car..
What u have to really worry about is light blue smoke while driving or after idling for about 10-15mins then giving the car a lil bit of gas and is noticable
What u have to really worry about is light blue smoke while driving or after idling for about 10-15mins then giving the car a lil bit of gas and is noticable
SPEED3TYPE2
Member
you never noticed it but its there. now that your aware of it you will see it. tell one of you friends to floor there car and you will see it. Its probably more previlant on a turbo car cause its really spitting some fuel...
The main byproducts from combustion are water and CO2. When its cold out and or the exhaust system is cold the exhaust will cool more before exiting the tailpipe and tend to condensate on particles in the exhaust forming the fog you are seeing. In very cold weather the tailpipe will actually drip water out as the water will change to a liquid before exiting the tailpipe.
High humidity will also cause the condensation to happen at higer temperatures.
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- 07 Speed3, Cosmic Blue
It does it when its not cold out. I think the main problem here is the PCV valve going into the Intake manifold. There is a thread discussing this problem. I think it is the one about a catch can install.
This would explain alot.
Fuel shooting out of the tailpipe???? Thats a stretch ain't it??
This would explain alot.
Fuel shooting out of the tailpipe???? Thats a stretch ain't it??
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- 92 & 16 Meyatas
Thin white vapor: No cause for concern.
A thin cloud of white vapor that quickly dissipates after leaving the tailpipe is probably the result of normal condensation buildup inside the exhaust system. It may even be accompanied by a slow drip of water. This is a common sight when cars, even new ones, are first started in the morning, since condensation has had time to build up overnight.
Blue or gray smoke: See your mechanic.
Thick blue or gray smoke that doesn't dissipate quickly is most likely the result of oil being burned in the engine's combustion chamber. It can be caused by something as minor as clogged oil passages or it may point to something more serious that could require extensive engine work.
If your engine is burning enough oil to produce visible exhaust smoke, the oil level will drop over time and require periodic top-offs. Worse, burning oil can foul the engine's spark plugs, causing maladies ranging from a rough idle and reduced fuel mileage to hard starting and sluggish acceleration.
On turbocharged vehicles, the presence of bluish-gray exhaust smoke may indicate turbocharger failure, especially if accompanied by a high-pitched, sirenlike whine. The turbo may need to be rebuilt or replaced. The oil lines to and from the turbo should also be replaced at this time.
Regardless of the cause of this type of smoke, you should have the vehicle checked out by a qualified mechanic as soon as possible.
Black smoke: See your mechanic.
Black, sooty smoke is usually symptomatic of an engine that's burning too much fuel. Because engines run inefficiently when cold, they use extra fuel at start-up to ensure a smooth idle and stumble-free acceleration. If the smoke clears up as the engine warms to operating temperature, it's probably nothing to worry about.
Should the smoking persist, a clogged or dirty air filter is a likely culprit. (On carbureted vehicles, the choke and choke linkage could have a buildup of gum and varnish.) If the filter checks out OK, a faulty sensor, a clogged fuel injector, or another intake-system component may be to blame. Because of the vast complexity of modern fuel-injected engines, your best bet may be to have the car checked out by a mechanic with specialized training in these types of repairs.
Thick white smoke: Call a tow truck.
Unlike the wispy white vapor described above, billowing white smoke is almost always an indication of serious engine trouble, and warrants immediate attention. If you continue to drive the vehicle, the engine could overheat and suffer extensive damage. Smoke of this sort is usually caused by the engine burning coolant, and can be the result of a blown head gasket or a damaged cylinder head, or a cracked engine block, which requires a new engine or an engine rebuild. Even a small coolant leak can lower the engine's coolant level, resulting in overheating and, potentially, catastrophic engine damage. A coolant leak into the engine's oil system may not cause any tailpipe smoke but could cause the oil to become thin and milky looking, and cause the coolant to look like brownish sludge. This, too, requires immediate attention.
A thin cloud of white vapor that quickly dissipates after leaving the tailpipe is probably the result of normal condensation buildup inside the exhaust system. It may even be accompanied by a slow drip of water. This is a common sight when cars, even new ones, are first started in the morning, since condensation has had time to build up overnight.
Blue or gray smoke: See your mechanic.
Thick blue or gray smoke that doesn't dissipate quickly is most likely the result of oil being burned in the engine's combustion chamber. It can be caused by something as minor as clogged oil passages or it may point to something more serious that could require extensive engine work.
If your engine is burning enough oil to produce visible exhaust smoke, the oil level will drop over time and require periodic top-offs. Worse, burning oil can foul the engine's spark plugs, causing maladies ranging from a rough idle and reduced fuel mileage to hard starting and sluggish acceleration.
On turbocharged vehicles, the presence of bluish-gray exhaust smoke may indicate turbocharger failure, especially if accompanied by a high-pitched, sirenlike whine. The turbo may need to be rebuilt or replaced. The oil lines to and from the turbo should also be replaced at this time.
Regardless of the cause of this type of smoke, you should have the vehicle checked out by a qualified mechanic as soon as possible.
Black smoke: See your mechanic.
Black, sooty smoke is usually symptomatic of an engine that's burning too much fuel. Because engines run inefficiently when cold, they use extra fuel at start-up to ensure a smooth idle and stumble-free acceleration. If the smoke clears up as the engine warms to operating temperature, it's probably nothing to worry about.
Should the smoking persist, a clogged or dirty air filter is a likely culprit. (On carbureted vehicles, the choke and choke linkage could have a buildup of gum and varnish.) If the filter checks out OK, a faulty sensor, a clogged fuel injector, or another intake-system component may be to blame. Because of the vast complexity of modern fuel-injected engines, your best bet may be to have the car checked out by a mechanic with specialized training in these types of repairs.
Thick white smoke: Call a tow truck.
Unlike the wispy white vapor described above, billowing white smoke is almost always an indication of serious engine trouble, and warrants immediate attention. If you continue to drive the vehicle, the engine could overheat and suffer extensive damage. Smoke of this sort is usually caused by the engine burning coolant, and can be the result of a blown head gasket or a damaged cylinder head, or a cracked engine block, which requires a new engine or an engine rebuild. Even a small coolant leak can lower the engine's coolant level, resulting in overheating and, potentially, catastrophic engine damage. A coolant leak into the engine's oil system may not cause any tailpipe smoke but could cause the oil to become thin and milky looking, and cause the coolant to look like brownish sludge. This, too, requires immediate attention.
