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6.4 Powerstroke High Idle


Jun 8, 2022

Why does my diesel truck idle high in park?

The most common problem is a faulty fuse. In modern vehicles, engine idle speed is most often controlled by the idle air control (IAC) motor. This can be impacted by bad fuses in many different electronic systems in your car. Next, your high idling could be caused by a computer malfunction. via

What does high idle do on a diesel?

For those who idle their trucks for long durations (tradespeople, whatever) it keeps the oil pressure and engine temps higher which is overall better for the engine. via

What causes white smoke in a 6.4 Powerstroke? (video)


What is Ford SEIC high idle?

As announced by Ford, the 2005 F250-F550 Super Duty Trucks and Econoline Vans (over 8500 GVW) will all feature Ford's new High Idle System. The Stationary Elevated Idle Control (SEIC) is an engine control that has been internalized into the vehicle computer. via

Why does my f250 idle high when parked?

Malfunctioning Throttle: A malfunctioning throttle system can cause both a high or low idle as well as an engine stall. A dirty air intake or cracked air intake tube is often the culprit. Computer Malfunction: If the powertrain control module is malfunctioning, idle speed may be affected. via

What RPM should a diesel idle at?

Idle the engine at 900 RPM to 1200 RPM.

This ensures the oil has sufficient pressure to reach the top of the heads in the engine. via

How long should you let a diesel idle before driving?

Myth: Diesel engines need to warm up at idle for 5 to 10 minutes or more especially on cold days before driving them. Fact: This is one of the most common myths about diesel engines. Most engine manufacturers recommend that newer diesel engines idle for no more than 3 minutes before driving. via

Is it OK to leave a diesel running while fueling? (video)


Can injectors cause blue smoke?

This can be caused by worn/leaking injectors or restrictions in the air intake system. Blue smoke is normally the result of engine oil entering & burning inside the combustion chamber. This is most often caused by low compression, or worn piston rings. via

Why is my Ford diesel blowing white smoke?

White smoke coming from the exhaust usually points to one point of failure: the injectors. Usually, white smoke indicates that the diesel fuel is not burning correctly. Unburned diesel fuel will make its way through the exhaust completely unused. Be careful of white smoke as it will irritate your eyes and skin. via

How do you stop white smoke from a diesel engine?

White smoke on a cold start, and then it disappears as the engine warms up. This is very common. It will often happen at startup in cold weather with lower compression engines. As you start running the engine at idle (around 650 or 750 rpm), you will achieve a more effective compression ratio, and the smoke clears. via

How do you set the high idle on a 2017 f350? (video)


What causes diesel engine to over rev?

Most often, over-revving occurs not because of a deliberate attempt to push a vehicle, but rather as a result of missing a gear while shifting. When a manual car accidentally downshifts, a rev limiter will not be able to react quickly enough to prevent the engine from over-revving. via

Why does my diesel idle high when cold?

The extra fuel helps the engine start faster. But we also do not want the fuel-air mixture to be too rich. So, the throttle valve opens to raise the engine's idle speed. That's why you see the engine idling at 1500rpm or even higher. via

Why is my truck idling so high?

Air Intake:

If there is an issue with this system, such as an intake leak, or faulty IAC (Idle Air Control) valve, there could be too much air getting into your engine causing a fluctuation in idle speed. via

Will a bad throttle position sensor cause high idle?

It could either stay shut or it won't close properly which is a severe issue. If it stays shut then your engine is not going receive air and it won't start. When the throttle gets stuck in an open position than your vehicle will receive too much air and cause it to have a high or fluctuating idle. via

How much diesel Do you burn idling?

Idling uses up to ½ gallon of fuel per hour (although it varies depending on the type and size of the engine). It may not seem like much, but idling for a few minutes everyday can cost you several dollars per week. via

What is optimized idle?

Optimized Idle is a system which automatically stops. and restarts the engine to accomplish the following: • Keep the engine oil temperature between factory set limits. • Keep the battery charged. • Keep the cab/sleeper or passenger area at the desired temperature (using the. via

Are cold starts bad for diesels?

Myth #2: Diesel engines won't start in the winter.

Today's technologies for cold-start are very effective,” Ciatti said. ​“Modern diesel engines start in cold weather with very little effort.” The problem is that diesel jells at low temperatures. Below about 40°F, certain hydrocarbons in diesel turn gelatinous. via

Do diesels need to warm up before driving?

In order to start a diesel engine and keep it running in cold weather, you must make sure you allow plenty of time for your engine to warm up. If you do not let your engine warm up before driving, you will make it work harder than necessary, which will lead to problems later on. via

What temp does diesel fuel gel up?

This term is pretty self-explanatory, since fuel gelling occurs when the fuel in your tank thickens up enough to look and feel like gel. This only happens when the temperature outside drops below 32 degrees Fahrenheit, though it's most likely to occur at about 15 degrees or lower. via

How long can you let diesel sit?

Exxon states that “diesel fuel can be stored 6 months to 1 year without significant fuel degradation if you keep it clean, cool and dry.” Chevron adds that diesel fuel can be stored longer than a year under certain conditions: First, the fuel was purchased clean and dry from a reliable supplier. via

What happens to diesel when it sits for a long time?

The lubricity of the diesel leads to internal vehicle damage: Now that this diesel fuel no longer has the lubricity it once had, the acidic nature and thickness of the fuel will begin to adversely affect the fuel pump, diesel injectors, and engine and may not even be able to start your engine if bad enough. via

What does GREY smoke from a diesel mean?

Gray or black exhaust smoke in a diesel engine could be indicate several problems: Wrong grade of fuel used. Clogged air filter. Improper timing. Overheating engine. via

Is black smoke bad for a diesel?

Black smoke is partially-burned fuel. An engine that's running properly will burn all of the diesel fuel completely, making CO2 and water. So black smoke means something is causing the fuel to not burn completely. via

What does GREY smoke mean?

Blue or Grey Smoke

If the smoke from the exhaust pipe is either grey or bluish-tinged, it generally means that your engine is burning oil inside the combustion chamber. Burning oil could be due to a number of causes, from leaky valve seals to bad piston rings. via

Can EGR valve cause white smoke?

White Smoke - while that pesky Valve can cause an abundance of black smoke billowing from the pipes, a failing EGR Cooler actually emits white smoke, or steam, caused by evaporating coolant inside the cooler. via

Does EGR cause black smoke?

Dirty EGR valve. The EGR helps to re-circulate the engine emission by returning them to the combustion chamber and not sending them directly to the exhaust emission system. The carbon chucks could clog your EGR valve, which will result in loss of power, fuel inefficiency and emission of black smoke from your exhaust. via

Can dirty diesel cause white smoke?

Clogged fuel filter

The fuel filter may also be damaged to the point that fuel begins to pass through unfiltered, causing contaminants like water or gasoline to mix with the diesel in the combustion chamber. Either way, it results in a white or gray smoke coupled with a raw fuel smell from the exhaust pipe. via

Can a blocked DPF cause white smoke?

In a Diesel engine with a Diesel particulate filter (DPF) system, high-sulfur fuel causes white smoke containing odorous and harmful pollutants during DPF regeneration. via

Why is rolling coal a thing?

Rolling coal is a form of conspicuous air pollution, used for entertainment or as protest. Some drivers intentionally trigger coal rolling in the presence of hybrid vehicles (when it is nicknamed "Prius repellent") to cause their drivers to lose sight of the road and inhale harmful air pollution. via

Why do diesels smoke black?

The black smoke is composed primarily of elemental carbon from incomplete combustion of diesel fuel and traces of engine lubricant. The exhaust of a typical diesel engine contains elemental carbon (soot), semi-volatile organic hydrocarbons, sulfates (primarily sulfuric acid), and water vapor. via

How do you set the high idle on a 2019 f350? (video)


How do you turn on the high idle on a 6.7 Powerstroke?

To set the desired high-idle RPM, You must first depress the emergency brake to engage the high idle then start and idle the engine. Be sure it is up to operating temperature and your foot is off the brake pedal. the “high-idle” position. The engine should idle up. via

What RPM is too high for a diesel?

Some technologies like VVT (ideally dual VVT, on both intake and exhaust) and two cam profiles like in VTEC or variable valve lift may allow tuning a gasoline engine to run smoothly from 1000 RPM to over 6500 RPM. Many diesel engines can very well run at 1200 - 1500 RPM, perhaps even 1000 - 1200 RPM. via

Should you redline a diesel?

THUMB RULE- Never redline a diesel engine. Its harmful to it in long run. via

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