What does white smoke mean on a Duramax engine?

White smoke from an LB7 Duramax engine often indicates faulty injectors. We’ve heard of rollin’ coal, but rollin’ snow? Not a good sign. Blowing white smoke is a red flag for your diesel engine, yet we see this happen all the time to our customers.

Can you see white smoke from a diesel engine?

White smoke in diesel engines is usually the last color you want to see, particularly on gas cars. If the smoke is thin, and goes away relatively quickly, than it is merely condensation. However, thicker, longer lasting smoke is a much larger headache.

Why does my diesel engine have blue smoke?

Blue engine smoke is the rarest type of smoke emanating from a diesel engine. The presence of blue smoke is an indication of burning oil. Blue smoke should not be ignored but is common when starting an engine in a cold weather. The oil thins out when it is cold and some could escape into the cylinder and be burnt.

What kind of smoke comes from a diesel engine?

Blue Smoke: Blue engine smoke is the rarest type of smoke emanating from a diesel engine. The presence of blue smoke is an indication of burning oil. Blue smoke should not be ignored but is common when starting an engine in a cold weather.

Why does my Duramax engine have white smoke at idle?

A common issue with the GM 6.6L LB7 Duramax engine is white smoke at idle. Worn and damaged injectors are often the cause however there are other causes and considerations that should be looked at prior to injector replacement. 1. Remove IGN 1 relay. 2.

What does blue smoke from a diesel truck mean?

Gray or Blue Smoke from Diesel Exhaust. Newer, low mileage truck owners can skip this paragraph, but many of us like to have a worn out beater truck laying around, or maybe your teenager bought their first car from a not-so-honest guy. Blue usually means one thing: you are burning oil.

Why does my diesel engine have smoke coming from the exhaust?

Consistent smoke coming from the exhaust most likely indicates a deeper internal problem with the engine. A small puff of smoke during quick acceleration is acceptable with older diesel engines due to a lag before the turbocharger’s air flow can match the increased volume of diesel fuel injected into the cylinders.

Why do I have blue smoke coming out of my injectors?

This can be caused by worn/leaking injectors or restrictions in the air intake system. BLUE SMOKE. 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.

When do you know you have a problem with an injector?

Once the problem injector (s) are confirmed (by checking the balance rates and/or capping the feed line to injectors one by one, or bench testing), it’s time to get it fixed. As we’ve written previously, we test the heck out of injectors with state-of-the-art equipment you won’t find anywhere else.

What causes blue smoke in the combustion chamber?

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.

What causes a Duramax diesel engine to heat up?

When the engine is working hard, the turbocharger is drawing in a ton of air, and the restrictive stock turbo inlet tube can effectively choke the VGT turbocharger causing the compressor outlet temperature to skyrocket, heating up the intercooler, and ultimately raising the temperature of combustion and the coolant temp.

Are there any problems with the LLY Duramax?

In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 ½ redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring.

How to troubleshoot an automotive engine high idle?

The troubleshooting procedure for high and low idle conditions are similar, which are included in the following: Step 1 – If the check engine or service engine light soon has illuminated retrieving the diagnostic trouble codes could lead you in the right direction of what the problem is, or is related too.

Are there any issues with the Duramax pickup?

This can produce long cranks and hard starts. Glow Plug System Issues – Nearly half of the check engine lights that come in for the Duramax pickups are for glow plugs. The glow plugs burn out over time and can be a real nuisance to remove from the aluminum heads sometimes.

What causes white smoke from exhaust when idle?

What Causes White Smoke From Exhaust When Idle? If you have white smoke from exhaust when stopping or idling, your combustion chambers engine might get oil inside, which cause them to burn off the exhaust. This will cause white smoke, along with the idle issue.

Are there any issues with the Duramax check engine lights?

Glow Plug System Issues – Nearly half of the check engine lights that come in for the Duramax pickups are for glow plugs. The glow plugs burn out over time and can be a real nuisance to remove from the aluminum heads sometimes.

Why is my Duramax diesel engine not working?

The trucks computer keeps track of how much fuel needs to be added or subtracted from each individual cylinder to make the engine run smoothly, and this value is called the balance rate. If one cylinder is contributing too much or not as much as the rest, the cause is usually a bad injector and the cure is a replacement.

Why does my Duramax 6600 engine knock when idle?

And it still doesn’t make the knock sound at all when it’s cold, which corresponds to not showing injector balance rates being far off until it’s warmed up a bit. When it’s cold I can even touch the gas pedal and raise the RPMs up to 2,500 and then back down to idle, no knock, then when it warms up it starts knocking.

Why is my LMM engine blowing black smoke?

Any injectors that are more than +/- 6 are a possible cause for rough run. .Miss, smoke or rough run usually indicate that the injectors are the cause. LMM engines with a DPF may not show any smoke, but frequent DPF regen events would suggest poor combustion.

Why does my Duramax make a heavy knock sound?

It also doesn’t run unevenly making the vehicle shake when it’s cold (runs smooth,) but at the same engine RPM when warmed up (to normal operating temperature or at least blowing out heat from the vents) it makes a very heavy knock sound that scares me, it’s so loud. I let the vehicle cool down (it’s 15 degrees f) and tried it again 2 hours later.

What does black smoke mean in an injector?

BLACK SMOKE. Black smoke indicates excess fuel is being injected into the combustion chamber and/or not enough air is present. This can be caused by worn/leaking injectors or restrictions in the air intake system.

What causes white smoke from a fuel pump?

Continuous “light” white smoke 1 A clogged fuel filter 2 Low pressure in the fuel pump (Air in the fuel) 3 Faulty or damaged injectors 4 Incorrect injection timing (Worn timing gear or damaged crankshaft keyway). 5 Low cylinder compression (caused by leaking or broken valves, piston ring sticking, cylinder ring wear, or cylinder glaze)

What causes blue smoke to come out of engine?

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. But what we see more often than not are issues related to worn injectors.

What causes a Dodge Ram 1500 to misfire?

Perhaps the most costly misfire malfunction to correct is the mechanical misfire. This problem is linked to a defect in the engine’s internal components. Bad head gaskets, worn piston rings, bad valves and worn cylinder walls are all culprits.

Why does my Dodge Ram make no noise?

A worn timing chain will often rattle as it slaps the timing cover, and a broken rocker arm will sound like a big piece of metal is rattling around inside the top of your engine. Other failures such as a broken valve spring may make no noise at all other than the engine popping and pinging.

What are the signs of an ignition problem in a Dodge Ram?

Popping noises back through the intake manifold, severe surging and jerking accompanied by a rough idle and poor acceleration are all signs of an ignition problem. Periodic inspection of the ignition system is recommended to prevent such ignition difficulty.

Why is my Dodge Ram 1500 running rough?

Lean Misfire. Another common reason and typically missed diagnosis for a rough running engine is the lean misfire. In this case, the engine is receiving too much air and not enough fuel. This is most noticeable while the engine is resting at idle since this is when an engine typically requires more fuel to operate smoothly.

Why does my Chevy Silverado have white smoke coming from the exhaust?

The color of your exhaust can tell you a lot about the health of your Chevy Silverado’s engine and emissions systems. When there is white smoke coming from the exhaust, it can mean a few things. It’s not necessarily anything to be concerned about.

What kind of truck blows out white smoke?

Hello, I own a 2003 Silverado 2500HD 6.6L Duramax with 286k miles. As of recent, the truck will blow out white smoke after a couple of minutes of running. The owner before me didn’t take the best of care of the vehicle and have been fixing things as I go.

When do you notice white smoke from exhaust?

When you notice any kind of smoke from your exhaust be it white smoke from exhaust on startup or when accelerating and even when idle, they all are indications that, your vehicle is having one issue or the other which need your attention. How serious this will be, is totally dependent on the colour and type of smoke that is coming out.

What are the symptoms of a Cummins 5.9 engine problem?

Cummins 5.9 Faulty Fuel Injector Symptoms 1 Hard start or no start 2 Cylinder misfires 3 Fuel in the engine oil 4 Poor idling and performance, surging, etc.

Why do I have white smoke coming out of my injector?

Other causes of white smoke include lack of compression, or water/coolant entering the combustion chamber. BLACK SMOKE. Black smoke indicates excess fuel is being injected into the combustion chamber and/or not enough air is present. This can be caused by worn/leaking injectors or restrictions in the air intake system.

What does it mean when you have white smoke coming from your engine?

But excessive white smoke likely means coolant is leaking into the engine combustion chambers. This is usually caused by one or more of the following problems: Leaking or blown head gasket: The head gasket is located between the engine block and cylinder head. It seals the combustion chambers, as well as the coolant and oil passages.

Why does my car have a lot of smoke coming from the exhaust?

Thick smoke usually comes from the faulty in engine coolant, which could lead to many serious problems like damaged cylinder head, blown head gasket, cracked engine block… which might cost drivers quite a lot. In this situation, we suggest to not ignore it. A coolant leak, even small, can lead to the serious risk of damage to your dear vehicles.

What should I do if I have white smoke coming from my exhaust?

In order to fix it, drivers have to remove the intake manifold and examine the intake gasket. If there is any leak or rust, you know where to repair. If it is fine, we move to step number 2. Remember to only perform this step when the intake gasket is working fine. After that, we will come to the head gasket.

Where does the smoke come from in an engine?

Why is there white smoke coming out of my exhaust?

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. If white smoke occurs during a startup in freezing temperatures, then goes away,…

What causes black smoke coming from a diesel engine?

Black smoke is the most common smoke color coming from a diesel engine and most likely indicates something is wrong during the combustion of the diesel fuel. When diagnosing the problem the first place to look at is the mixture of air and fuel flow into the cylinders.

When to shut down a diesel engine with smoke?

No matter the color of the smoke it is not something you should ignore. A properly working and maintained diesel engine should produce no visible smoke. Make sure to shut down the engine immediately if you encounter excessive smoke as further heat or load could severely damage the engine further.

What does white smoke from a diesel engine mean?

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.

When does a Dodge Ram idle or stall?

Dodge Ram stalls or idles rough refers to when the Dodge Ram idles erratically, and in some cases, stops running as a result. This video details the 8 reasons why a Dodge Ram truck will idle rough or stall. The information in this video is specific to the 2001 2002 2003 2004 3005 2006 2007 and 2008 Dodge Ram 1500 2500 and 3500 models.

Why does my diesel engine have white smoke coming from the exhaust?

Newer electronic diesel engines with common rail injectors simultaneously match the speed of the turbo with the metered flow of diesel fuel into the cylinder. 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.

What does Blue Smoke mean when starting an engine?

The presence of blue smoke is an indication of burning oil. Blue smoke should not be ignored but is common when starting an engine in a cold weather. The oil thins out when it is cold and some could escape into the cylinder and be burnt.

What happens when you have an oil leak in a turbo?

Keep it simple: Under the Circumstances Where the Turbo Is Leaking Oil, You are also Losing Oil Pressure. It is Very Common for the Engine to Spin Bearings, or lose Compression Due To Lack of Oil Pressure in the Engine, Due to Your Turbo Leaking all the Oil pressure out the Turbo Seals.

Why does a journal bearing turbo blow oil?

Having and Oil Restrictor in a Journal Bearing Turbo can Causes Turbos to Eventually to Blow oil, Because it Starves the Turbo Of Oil, Which Causes the Internals of the Turbo to Wear out (including the Seals). Don’t Use a Restrictor with a Journal Bearing Turbo, if You think the OIl pressure is “Too High” Then a Drain with a Larger Inside Diameter.

Why does my GMC diesel have blue smoke in it?

Blue white smoke that burns your eyes is un-burnt fuel; cold temperatures, high altitude and excessive idle time all mean cold combustion and white smoke. Possible bad injector, use the scan tool to cancel one cylinder at a time and see if the smoke clears up.

What’s the difference between black smoke and white smoke?

Typically with a diesel black smoke means too much fuel too little air – or vice versa. White smoke usually means total and utter lack of combustion. I’m not a licensed diesel mechanic but I’ve worked with more then a few….. It wouldn’t be coolant then if you aren’t loosing any, nor if doesn’t smell sweet.

What causes white smoke in a GM 6.6L Duramax engine?

What to do if your car has white smoke?

If no coolant is present and the vehicle has a history of low coolant level, check the rest of the cooling system, head gaskets and the EGR cooler for leaks. The Glow Plug System continues to operate for a time after a cold start to reduce white smoke and improve idle quality.

What are the shortcomings of a Cummins Engine?

1. Killer Dowel Pin (KDP) Due to its ability to completely trash an engine, the killer dowel pin tops our list of Cummins shortcomings. On the assembly line, a tiny steel dowel pin was pressed into the block of ’89 to ’02 mills in order to locate the engine’s timing gear housing.

What happens if you take the cam gear out of a Cummins?

Once it falls out, the tiny dowel pin usually makes contact with the cam gear first and can then be drawn into both the injection pump and crank gears, effectively making it a 10-cent wrecking ball. Remember, if it takes out the cam gear, the pistons will contact the valves, potentially leading to a trashed head and block.

How many miles does a 2005 Cummins diesel have?

Enter your ride HERE to be a part of this month’s Ride of the Month Challenge! We had a 2005 diesel with 151K miles. Truck/engine meticuously cared for. We have the records. Truck was not worked hard, just a truck for everyday use. #1 cyclinder washed out. Cummins REFUSED to do anything since guarantee only for 100K miles.

Is the 5.9 Cummins Engine a good engine?

If you don’t consider the fuel system, the 5.9 Cummins is a very reliable engine. The internal parts like the pistons, rods, and crank will last for a zillion miles even with some abuse. The turbos are very responsive and will give a long service life, but they don’t have a tremendous horsepower potential.

Is there a third injection event in 5.9 Cummins?

In addition, the later 5.9 Cummins also featured a third, post-injection fuel event after the main spray, and the main purpose is to reduce harmful emissions. The third injection event is said to have a slight negative impact on fuel mileage, however with aftermarket tuning, the loss in mileage can be restored.

What kind of nozzle does a Cummins 5.9 have?

The later 04.5 to 07 Cummins 5.9s featured a five-hole nozzle, a narrower spray pattern, and to match that pattern, a different shaped piston bowl needed to be used. In addition, the later 5.9 Cummins also featured a third, post-injection fuel event after the main spray, and the main purpose is to reduce harmful emissions.

Why do I have white smoke coming from my exhaust pipe?

White smoke from the exhaust pipe on startup, idle, or acceleration tells us that coolant or water is getting vaporized in the exhaust pipe. You can also carefully smell the water or smoke from the exhaust; if it smells sweet, it’s most likely coolant, and in this case, you have a bigger problem.

What are the most common problems with a 6.0L Powerstroke?

Most Common 6.0L Powerstroke Problems. 1 1. Head Gasket Failures & TTY Head Studs. The 6.0L Powerstroke came equipped with TTY, or torque to yield, head studs. If you are considering 2 2. FICM: Fuel Injection Control Module Failure. 3 3. 6.0L Powerstroke Oil Cooler Problems. 4 4. EGR Cooler Problems. 5 5. EGR Valve Problems.

What does black smoke mean on a PowerStroke?

Smoke is the easiest way to tell what is wrong with a PowerStroke fuel injector. White smoke is normal on startup, but excessive white smoke could mean a loose injector or low compression. Black smoke is normal on hard accelerations, but excessive black smoke means the fuel-to-air ratio is too high.

Why does my Ford Excursion have black smoke?

Last week it started pumping out quite a bit white smoke on idle/low speeds AND black smoke on acceleration. By black smoke I mean closer to dark gray/light black (it’s not rolling coal per say). filled up with new diesel the day before I first noticed any smoke (I don’t know if this has anything to do with anything but maybe a clue perhaps?)

What are the symptoms of a bad Powerstroke injector?

Symptoms of a Bad PowerStroke Injector 1 White Smoke. 2 Black Smoke. 3 Blue Smoke. 4 No Start/Hard Start. 5 Rough Idle/Loss of Power.

What does black smoke mean on hard acceleration?

Can a faulty FCA cause a Cummins to stop?

A faulty FCA can cause a variety of issues, from rough idle, low power, a deviation from desired rail pressure, and even a no-start condition. It’s a pretty common failure, and luckily a new FCA is very easy to install on a Cummins, and it’s also affordable at a hundred and thirty bucks.

What causes a diesel engine to have excessive black smoke?

Modern diesels have grown dependent on the turbocharger to the point that they cannot function properly without it; any interruption in boost delivery will stress your engine out to the point that it may, once again, take up smoking. Compressing air makes it hotter, and hot air — by volume — contains less oxygen than cool air.

Are there any problems with the Ford 6.0L Powerstroke?

If you’re a diesel nut like me, you probably know that most people will steer clear of buying a 2003 to 2007 model year Ford Superduty Diesel truck. The 6.0L Powerstroke is known for having major problems. Most of these problems originate from the factory design.

Why does my 6.0L diesel engine have white smoke?

Some vehicles equipped with a 6.0L diesel engine may experience white smoke, lacks power, exhaust odor, surges, runs rough, or no start when cold. These conditions are caused by the injector spool valve sticking internally during cold engine operation engine oil temperature less than 70° F (21° C).

Why does my 6.0L diesel engine run rough when cold?

ISSUE: Some vehicles equipped with a 6.0L diesel engine may experience white smoke, lacks power, exhaust odor, surges, runs rough, or no start when cold. These conditions are caused by the injector spool valve sticking internally during cold engine operation engine oil temperature less than 70° F (21° C).

Is it possible for a fuel filter to produce white smoke?

Yes. If the fuel is contaminated with water or some other foreign material it is possible that it will produce white smoke. The best way to test the fuel is to pull the filter and put it in a clear glass. Wait a few minutes and see if there is any separation. Can air in fuel cause white smoke? Yes. This is another common cause of white smoke.

Why does my Ford F-150 have white smoke coming from the exhaust?

An F-150 or F-250 that’s running well should not be pouring white smoke every time you get on the gas. This diagnostic will tell you what to look for if yours is smoking more than normal.

What kind of smoke comes out of exhaust?

2008 Ford F350 Diesel 6.4L blue smoke coming out the exhaust once in a while. Not all the time. Losing coolant. EGR VALVE/COOLER AND #2 FUEL INJECTOR WENT OUT THIS WEEKEND WITH MY HORSE TRAILER INCLUDING HORSES ON BOARD IN 100 DEGREE WEATHER.

What causes white smoke in a 7.3 liter F-250?

If you coolant level is low and you know you’re not burning fluid, check around the coolant lines for signs of leaks. Figure 2. A coolant leak on a 7.3 liter F-250. If you don’t have a coolant leak, move on to Step 3. Oil leaks inside your combustion chamber can also cause white smoke. Check for oil leaks.

What does blow by mean on a new diesel engine?

A brand new diesel engine running at full load will experience a little bit of blow-by upon startup. Blow-by is a condition where diesel fuel, air and vapor are pushed past the rings into the crankcase of the engine. Correct pressure should be maintained in the cylinder chamber in order for proper combustion to occur.

Why does my car have black smoke coming from the injector?

Black smoke is normal on hard accelerations, but excessive black smoke means the fuel-to-air ratio is too high. Black smoke can also be attributed to restricted intake or exhaust, or a leak in the intake hose. Blue smoke is normal when the engine is cold, but excessive blue smoke means the air-to-fuel ratio is too high.

What are the problems with a Duramax diesel engine?

Both of these issues result in fuel leaking from the injector which can then enter the crankcase. This can lead to more serious problems, as diesel fuel doesn’t offer the same lubrication properties as oil. You’ll also experience loss of power, excessive smoke, rough idling, and engine misfiring.

What causes the LLY Duramax Turbo mouthpiece to choke?

The LLY Duramax turbo air inlet manifold, sometimes called the turbo mouthpiece, forces the turbocharger to work harder than it needs to. It does this by essentially choking the turbo because of its small, restrictive design, forcing it to work harder to produce the same amount of boost. This results in excess heat and EGTs.

What causes a Duramax injection pump to fail?

As a result (allegedly), the lack of lubrication in the fuel can cause a premature failure of the injection pump, to a point where it won’t allow the LML Duramax to run. You can be driving down the road and everything seems normal, and when the pump fails, the truck just shuts off.

When did the first Duramax V8 engine come out?

Duramax Engine LB7 2001 to 2004 The first Duramax V8 was introduced in 2001 and was given the code name LB7. The introduction of common rail injection powered by the Bosch CP3 injection pump made the LB7 Duramax stand apart from other diesels of the day with excellent power and efficiency.

What was the code name for the Duramax in 2011?

In an effort to keep up with the ever-tightening emission regulations, GM redesigned its Duramax for the 2011 model year, and this time the code name was LML.

Are there any problems with the Duramax LMM?

One problem can rear its head when you are pushing the power of the LMM to a level GM never imagined, and that’s with the pistons. Simply put, they can crack under pressure. There are a lot of factors which dictate the power level where a piston bites the dust, but it’s usually north of 600 horsepower.

What does white smoke mean on a Duramax engine?