Category: Dd15 smoke control

Dd15 smoke control

The key of longevity for any engine is regular maintenance. Any time you see a change in the behavior, you need to address it. It might be a small problem, it may be the beginning of a huge issue, but either way, a quick reaction will ensure that the engine life is not compromised and that the costs to you are not unnecessarily high. So, what to do if the tailpipe is bellowing white smoke? During really cold weather, it is reasonable to expect some, but an engine running at full power should show no visible smoke.

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To be more specific, the white smoke you see is your diesel fuel, unburned, or only partially burned. The commonest reasons for this lie in the fuel system. They range from faulty fuel injectors to retarded fuel injectio n timing, or even low compression.

So, any decrease in the pressure or delay in the fuel delivery to the combustion chamber will result in incomplete combustion, leading to white smoke. The incorrect timing can be caused by a worn out timing gear or a damaged crankshaft keyway.

Faulty fuel injectors are also known to cause white smoke. This occurs when the fuel injector does not spray the appropriate amount of fuel into the combustion chamber. This usually makes an engine a lot louder than normally.

In this situation, the best course of action is a fuel injector service, to isolate the faulty injector, and replace or repair it. Similarly to the fuel injectors, low pressure in the fuel pump can also lead to white exhaust.

This mainly comes to be when air or other things get into the fuel line. The engine with a faulty fuel pump will be a lot quieter, but it will also have a lack of power, often stuttering when revved.

Low cylinder compression is another, albeit not so common cause of white plumes. This is a problem which can have many causes. Broken or leaking valves are among top causes of low compression, but far from only culprits. The cylinders or the rings on the cylinders might be worn from use, which requires replacing them promptly. Yet another option is cylinder glazing, which is basically a patina of sorts coating the cylinder.

The only help here is cylinder honing. As said at the start of this text, the problem might be a really simple one, like air getting into the fuel supply, which you can mend easily. However, there might be a more serious situation, when water enters the system. This is usually a result of faulty head gaskets or cracked cylinder heads or blocks. The treatment for this kind of failure is often really expensive. Whatever the cause of white smoke in your diesel engine is, you need to check it, before the situation escalates.

Regular diesel engine maintenance should prevent these situations from ever occurring, but be sure to note any change in the behavior of the engine.

It could have far-reaching consequences further down the line. Treat your engine well, and it will serve you for a very long time. Faulty fuel injectors Faulty fuel injectors are also known to cause white smoke.In over 40 years of diesel combustion research, Baileys has seen, repaired and prevented just about every cause of injector failure, and in this post we have compiled some of the most common symptoms, causes and ways to prevent the premature replacement of your common rail injectors.

While most of this post directly addresses the injectors BDG manufactures and sells, the info will be relevant to all common rail diesel vehicles. Chances are the problem is internal injector leakage caused by seal failure.

As this seems to be a common problem on our Facebook page and the forums, and the dealers all seem to be explaining it away, I took a quote from Matt Bailey at BDG:. Worse however is when the combustion gases, particularly carbon, leak past, ending up in the oil, blocking the oil pick-up in the sump and starving the engine. A simple check for this is to leave the nose of the car pointed down overnight. If the symptoms are worse, the sealing washers are faulty. Remember that common rail systems run at enormous pressure, so avoid tuning that increases pressure in the rails.

If you do notice it getting worse, we suggest you first pull the filter for inspection. Our experience is different. Another common cause of Hilux low RPM rattle is a dirty or clogged intake manifold.

It is worth trying and good maintenance practice to remove and clean the intake. The EGR system feeds exhaust gasses back into the intake, including carbon, which builds up over time. Once we have cleaned this out, the rattle has seemed quieter.

Either way, this is good maintenance practice, as it balances out the AFRs air-fuel ratiosgiving some fuel economy gains. Symptoms of a failing injector are a loud knock that is audible with the windows down. You hear this sound best when the vehicle is cold, or when sound bounces back to you from another car or wall. When symptoms of poor potency appear, men speak positively about Vialiks, but it is important to choose the right dosage of Sildenafil so that there are fewer side effects.

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This has a definite impact on injector longevity. Next, these injectors fire four to five times per combustion stroke, instead of just one. That is a lot of additional work.

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Lastly, they have a much smaller operational tolerance than previous injectors. It is a miracle they last as long as they do! Fuel factors — We all know that foreign matter in the fuel is no friend.

The physical tolerances within these injectors is as little as 1 micron.If your exhaust is making an unusual amount of noise, then you have either fitted a loud sports exhaust, and that is how you want your exhaust to sound — or — more likely, your exhaust has a hole in it in the wrong place. This is most likely caused by corrosion — the pipe or silencer box has rusted through, or a rubber mount has perished and the exhaust has cracked at one of the welded joints due to excessive movement during use.

Exhaust gas, especially in petrol cars carries moisture, which can build-up in the exhaust system and over time, with high temperature fluctuations and condensation thrown in there, cause corrosion. Once rust starts to spread on an exhaust it will quickly make the exhaust unsuitable and a potential MOT fail. Excessive smoke from your exhaust is never good, our advice is to stop the vehicle and park it in a safe place off the main road.

Then call someone to recover the vehicle, if you are a member of a roadside assistance provider such as the AA, RAC or similar, then call them. Lots of smoke is usually an engine issue, not an exhaust issue, but it will not be good for your exhaust either way, CATs and DPFs will be damaged by oil entering the exhaust from the engine and can quickly become blocked and need replacing if the problem is left to continue.

If you are a member of a roadside recovery service, then pull-over somewhere quiet and call them, if you are within a mile of home, then it may be sensible to head home and call then.

Emissions components such as CATs and DPFs and the associated sensors are frequent causes of limp-home mode, it means there is a problem, usually blockage with the unit. If it is a blocked DPF then the garage may be able to force regeneration — if you have been doing lots of short journeys in a diesel car.

Symptoms of a Bad or Failing Injector Control Pressure Sensor

It can mean faulty sensors, or be a symptom of a bigger engine issue, so does need sorting out. In all cases, your car needs attention quickly and generally the sooner you stop and call for assistance, the easier it will be to fix. In a word, yes. The Catalytic Converter CAT is often made of ceramic material, the whitish powder you see coming out of the exhaust means the CAT has fractured, this can be caused by a number of issues, but usually it is an impact that has caused the ceramic brick to break-up.

Anything from stones to speed calming humps can do this. The emissions warning light being illuminated on the dashboard usually means a sensor on your exhaust system is failing, it can also mean there is an engine issue and this is causing an emissions warning.

Usually it is OK to drive your car home, or to a garage — if it will still drive. Most modern exhausts onwards is a good rule of thumb have two sensors on them measuring the condition of the exhaust gas, if those sensors start to produce an unusual signal due to an issue with the engine or the sensor then they will illuminate on the dash.

If the sensor is the issue, then a replacement can quickly be supplied and fitted, if there is another issue the sensor is detecting the results of that issue, then that will need to be investigated and remedied.

If you see a dash light come on soon after having a new CAT or DPF fitted, take your vehicle back to the garage immediately and ask what has been fitted, you can always insist on a Klarius to be on the safe side. There are poor quality items out there and they will cause the light to illuminate soon after being fitted. Rattling exhausts can be caused by a number of different issues, and will create a lot of noise during driving. A baffle a piece of perforated metal or tube loose in the muffler box can lead to excessive rattling, and is usually caused by corrosion or poor manufacturing.

While not a terminal issue, the resulting change in exhaust backpressure could reduce fuel economy. This is a reasonably cheap fix, requiring a new muffler and associated pipe.

Catalytic converter CAT or diesel particulate filter DPF failure can also increase rattling, as the internal ceramic strata of either device has failed. This can be caused by impacts during use or excess fuel in the emissions system. Generally, the failed device will require a full replacement to remedy the issue. In addition, loose exhausts will rattle excessively. Perished rubber mountings or snapped brackets are typically to blame.

Replacing the mountings might sometimes work, but if the exhaust has come under additional stress, it may have fractured.Within the past few years, the Environmental Protection Agency EPA has introduced strict emissions standards in order to reduce harmful pollutants from being released into the environment.

These regulations proved difficult to meet, but Detroit engineers were successful by implementing Selective Catalytic Reduction SCR technology. It contains the diesel oxidation catalysts DOCdiesel particulate filters DPFand selective catalytic reduction device SCR to ensure the air coming out of the engine is cleaner than the air going in. When exhaust exits the engine it is made up of carbon monoxide, hydrocarbons, and particulate matter.

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These are all harmful to the environment and must be captured in the 1-box before exiting through the exhaust outlet. The first defense after the exhaust leaves the engine is the diesel oxidation catalyst. The DOC is designed to convert the carbon monoxide and hydrocarbons into carbon dioxide and water. The DEF reacts with the nitrogen oxides in the SCR to form nitrogen and water which are both already present in the atmosphere and safe to breathe.

After passing through the DOC the exhaust moves on to the diesel particulate filter. Every so often the 1-box needs to burn off this particulate matter and does so in a process called regeneration.

dd15 smoke control

The regeneration process can either be active DDEC sends a signal while the truck is in use to increase temperatures in the 1-boxpassive normal exhaust temperatures are usedor stationary the DDEC notifies the driver that a regeneration is necessary.

The driver begins the process while stationary and it takes about 45 minutes to complete. During the regeneration process, the soot and ash captured in the DPF is converted to a much smaller amount of ash. Improper cleaning can lead to the 1-box overheating. This may cause failure to the 1-box, which is an expensive repair.

Maintaining your Aftertreatment System is easy, because we designed it that way. In addition to proper DPF maintenance, make sure the Detroit recommended maintenance intervals are followed to ensure your Aftertreatment system is performing to its full potential. Your DPF will be replaced with our signature Detroit Genuine Parts brand, while the old core is sent back to our factory for an extensive proprietary, environmentally friendly washing service.

This will potentially lead to aftertreatment system damage, increased downtime, and additional maintenance costs. Aftertreatment Systems need diesel fuel with sulfur content below 15ppm. Higher sulfur content may eventually cause damage to your Aftertreatment System by fouling or prematurely plugging the Diesel Particulate Filter. Using the correct fuel is essential to the proper function of your Aftertreatment System, while also helping lower emissions. DEF is a simple, non-toxic, inexpensive pre-mixed fluid composed of two-thirds pure water and one-third automotive-grade urea.

DEF is sold at thousands of locations throughout North America. After reviewing your base warranty coverage, consider extended service coverage for protection on engine systems and components that fit your needs and application.

Please work with your security administrators for login or content issues. If you do encounter any technical issues, please contact the Software Support Center at or dealer. The Detroit Connect portal will also give you access to new features, such as Remote Updates, and Analytics, available late Here, you can access the full spectrum of online applications, resources and tools you need.

Whether you use DTNA online resources to complete repairs, purchase parts, submit warranty claims, spec new vehicles or track the status of your truck orders, DTNAConnect streamlines the tasks and activities that are part of your daily work routine.The injector control pressure sensor is an engine management component that is commonly found on diesel engines.

As its name implies, it is an electronic sensor that monitors the fuel pressure going to the injectors. Diesel engines require an especially fine tuned fuel mixture, as they rely on pressure and temperature to ignite the fuel mixture, instead of a spark.

The injector control pressure sensor detects the pressure of the fuel feeding the injectors, and sends that signal to the computer so that it can make the adjustments for optimum performance and efficiency. When there is an issue with this sensorthe signal can be compromised, which can lead to performance issues with the vehicle.

One of the first symptoms of a possible issue with the injector control pressure sensor is issues starting the engine. Diesel engines do not have spark ignition systems, and therefore require a finely tuned fuel mixture for proper ignition. If the control pressure sensor has any issues, the computer signal to the injectors can be thrown off, which may lead to issues when starting the engine.

dd15 smoke control

The engine may require more cranks than normalor several turns of the key before it starts. Another symptom of a possible issue with the injector control pressure sensor is engine performance issues.

A faulty sensor can throw off the fuel mixture and cause the engine to experience misfiresa loss in power and accelerationa loss in fuel economyand in some cases even stalling. Similar symptoms can also be produced by other issues, so a proper diagnosis is recommended to be sure of the issue.

If the computer detects an issue with the injector control pressure sensor or circuit it will set off the Check Engine Light to notify the driver of an issue. An illuminated Check Engine Light can also be set off by a wide variety of other issues, so having the computer scanned for trouble codes is highly recommended. Injector control pressure sensors are more commonly found on diesel engines, however they can also be found on vehicles equipped with gasoline engines.

When Downtime Is Not An Option.

If you suspect that you may be having an issue with the injector control pressure sensor, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if the sensor should be replaced. The most popular service booked by readers of this article is Fuel System Inspection. Our certified mobile mechanics make house calls in over 2, U. Fast, free online quotes for your car repair. Schedule Fuel System Inspection. Service Area. Average rating fromcustomers who received a Fuel System Inspection.

Starting issues One of the first symptoms of a possible issue with the injector control pressure sensor is issues starting the engine.

Engine misfires and decrease in power, acceleration, and fuel economy Another symptom of a possible issue with the injector control pressure sensor is engine performance issues. Home Articles. The statements expressed above are only for informational purposes and should be independently verified.

Please see our terms of service for more details. Related Articles. What Happens to Sensors if They are Dirty?

Diesel Talk Episode 4. White Exhaust Smoke, Crankcase Filter, and Top End Oil Changes?

Related Questions. Pay a mechanic to carbon clean the entire engine.Just retuning your engine can achieve big horsepower and torque gains or better fuel economy and drivability.

This high temperature causes the urea to form ammonia. Many people are tempted to simply hollow out this filter, however this mistake can cause catastrophic failure. The exhaust is designed to have sufficient backpressure to keep your turbo from over-spooling. Short RPM spikes due to over-spooling can reduce the lifespan of your turbo and surrounding components.

Failure to follow J-Ball recommended procedures for the exhaust system of your vehicle will void the ECM tuning warranty. Call for more information on emission deletion tuning for off-highway and racing applications.

Please be advised that any truck modifications outside OEM specifications will void warranties, and as the customer you take full responsibility for all costs incurred as such.

The customer must be aware of all operational requirements for legal use in their country and any ECM modification tuning done by J-Ball Electronics is strictly for off-highway, racing or sled pulling competition. The customer hereby waives all legal rights and understands J-Ball Electronics, its employees, sub-contractors and business associates will not be held liable for any reason. Call our knowledgeable technical staff toll-free at for more information.

We are an aftermarket custom ECM tuner and rebuilder, all aforementioned names, logos and trademarks shown on our website are owned by the respective companies. TeamViewer 10 Download. Ready to tune your ECM? Detroit Diesel. All Rights Reserved.Discussion in ' Freightliner Forum ' started by sandmanMar 30, Log in or Sign up.

Find Trucking Jobs. Jun 3, Was this issue ever fixed? Losing prime in the DD series of engines can be related to a few things, most likely an air leak in the system allowing the fuel to drain back to the tanks causing hard start. The hard part is finding the leak. The easiest way to do this is to narrow down the leak path to either the engine side or chassis side. To do this, have you tech perform a low pressure leak down test on the engine side fuel system.

After a few minutes purge time stop the air purge and cap the outlet of the on-engine fuel module. It should be mentioned that the air hose "device" should have a regulator, pressure gauge, and a shutoff valve that doesnt leak on it. Once pressure is achieve, close the inlet shutoff valve and monitor the pressure on the gauge. The pressure should read steady at 70psi. If it bleeds down over the next few minutes 20you have a leak on the engine side fuel system.

157/ FUEL RAIL PRESSURE TOO LOW

Two things can happen If it continues to leak down below 60psi, you have a low pressure side leak. If the pressure holds steady at 70psi, you do not have a leak on the engine side of the fuel system. This indicated you probably have a leak on the chassis side.

dd15 smoke control

Stealthy4Jun 3, Yes, let employers and TruckersReport text me with new opportunities, job alerts and other career information to the number I provided. There is no charge for this service, but standard message and data rates may apply. Jun 14,


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