You might have a faulty oxygen sensor. Typically, when cold, the engine management system operates in "open loop" mode ignoring feedback from oxygen sensors because they don't work properly until they heat up to a specific temperature range. Once the sensors heat up, the computer goes into "closed loop" mode using the signal from the oxygen sensors to help adjust the air/fuel mixture. If one or more sensors are faulty, the fuel mixture may be incorrect and cause a poor running condition.
Another possibility is that you have a running problem which is noticeable when the engine is turning slowly. Air metering, EGR system, and mechanical engine problems are your most likely suspects here. When the engine is cold, the computer raises the idle speed of the engine to warm it up faster and to prevent stalling which masks the problem until warmup occurs.
== == -you might also have a bad distributer or a bad catalytic converter or muffler
DI means Direct Injection. Diesel engine depending on combustion categorised in Direct injection or InDirect injection Engine. Direct Injection engine combustion takes place directly above the piston. But indirect injection combustion initially takes place pre-combustion chamber and after transfered to above piston.DI engine more fuel efficient, easily start in cold condition, But Noise more.
White smoke is unburned fuel, usually caused by low combustion temps in the engine. It should clear up after the engine warms up. If it takes a long time or the smoke persists when the engine is warm, it could be retarded injection. If you have a cold start lever pull it to the first notch and see if the smoke disappears. If not it could be an injector problem, or an injection problem (injection pump TDI... etc)
Yes for both and will be longer amount of time when cold.
i asked this question the tempture gage shows it is over heating but the engine is cold to touch
does it happen when driving, just after starting, when hot, when cold, carbed engine, injection engine? need more details to be able to help you mate.
On a bosch CIS or CIS E fuel injection system there is a thermal time switch located on the engine upper radiator coolant hos at the head. This device controls the cold start injector timedto engine temperature, cold engine up to about 10 seconds of injection, hot engine 1 or 2 seconds of injection. This switch is used on many European models (VW, MB, etc.) Since you did not provide a make, year and model of the vehicle this is only a guess.
The #1 cause of cold air from the heater when the car is stopped, or the engine is idling, low engine coolant levels.
A gasket could be the cause of a Jeep Cherokee engine to whistle when it's cold. Check the throttle body gasket to see if it needs to be replaced.
Check the ignition coil. At cold coils generally operate properly, when the coil heats a failing unit will start to break down and fail causing misfiring and poor engine operation. Second check for a failing ignition controller in the distributor.
Vaccine and injection is different as a vaccine is an injection for diseases like chicken pox and an injection is not a vaccine as it is used in common diseases like cold and cough.
The fast idle is usually because of the automatic choke which your engine needs. A cold engine will send a signal to your fuel injection system to "choke" some of the air from the supply in order to get more fuel to make the engine warm up. This causes the engine to rev up, and should return to normal after a minute or so. In colder weather, it may take longer.If you live in a snowy climate, you may want to invest in an engine blanket to keep the engine from getting too cold at night -- especially on a gasoline engine. This will reduce the amount of time the engine will choke.
You don't have a problem with the engine at all. You truck came factory with a governor on it that will not let the engine run any faster. THANKS to GM.
Lower emissions Better cold engine starting/idling better fuel economy and in most cases more power through out the powerband.
Most likely needs a tuneup done. Check the timing and change the normal tuneup part.
Cold engine knock that goes away after warmup is usually piston slap. Worn pistons worn cylinder bores, wrong oil (too light) on a high mileage engine.
The fuel injectors make the ticking noise you hear at startup, especially when the engine is cold (colder temperatures).
The herpes virus causes cold sores.
The skin is cleaned with spirit before injection. It may just feel a bit cold
The coolant sensor for the ECM is malfunctioning. Get a manual on your car to find where it is located.
There are eight injectors, and possibly a ninth one, if it has a cold start injection system. there should be 1 per cylinder
in cold weather , engine may be so cold in the morning....
The herpes virus causes cold sores on the lips.
The herpes virus causes cold sores.
you have the COLD shivers because you get COLD..!!
Insufficient protection against freezing in cold weather or severe overheating.