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Volvo d12 black smoke

Discussion in ' Volvo Forum ' started by peifamilyMar 28, Log in or Sign up. Find Trucking Jobs. Volvo D12 black smoke. Injector or something else? Mar 28, 1. Trying to start a Volvo D12 that has been sitting for 6 weeks in colder temps east coast CanadaI did put some antigel in it before it sat.

The truck worked perfect when I parked it. Yesterday I went to start it, it started rough, white smoke poured out for a few minutes when warming up, it got to about 40 degrees and then the pure black smoke started pouring out of it and sounded like it was running on one cyl. I went and got some diesel and still the same, air temps are about degrees now.

I also reprimed it and I can hear the fuel go through the primer it pumps 2 or so times, then clicks up by the head Fuel tanks are nice and clear when looked in. No Algae or Foggy. I did put a heatgun on the filter for a few minutes, but no difference. Any other suggestions on getting her running? Does this look gelled up or perhaps something else wrong?

EGR Delete done a few years ago with the otrperformance kit, Unhooked batteries, pulled ecm fuse to make sure nothing was wrong with a bad start.

Pulled intake tubes and turbo free spins by hand. Started with tubes off and was the same so not starving for air. EPG was blocked off about 2 years ago when something similar happened airline at the back of it capped off, thanks to a thread by Pablo-UA Thanks! 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. Mar 28, 2. Mar 28, 3. Thanks, I will give that a try first. It looks like an easier test then pulling the exhaust off by the EPG to check for blocks and to test with no pipe. Mar 29, 4. Pipes all looked good. Ended up pulling EGRS, all were closed. Also saw the EPV piston was all rattley inside there.

I think a few injectors were sticking. Sounds fine now.

What Could Cause a Diesel Engine to Have Excessive Black Smoke?

Thanks for your help. Mar 30, 5. Mar 30, 6. Show Ignored Content. Draft saved Draft deleted. Your username or email address: Do you already have an account? No, create an account now. Yes, my password is: Forgot your password?Technically speaking, an intercooler as most of us know it is actually and "aftercooler. But whatever you want to call that radiator thing in your turbo plumbing, it plays an important role in helping your engine withstand the abuses of boost.

Intercooler failure is fairly rare, at least compared to failures in the plumbing between it and other components. All substances in this universe -- at least those warmer than absolute zero, or negative degrees F -- contain a certain amount of energy in the form of heat.

Compressing a gas takes the heat energy it contains and concentrates it into a smaller area, thus increasing the net temperature of the gas. Dropping the temperature of a given volume of gas will drop its pressure. Cooler air contains more oxygen per cubic inch, which boosts horsepower, and it reduces the odds of fuel pre-ignition and uncontrolled detonation. The intercooler is a radiator that sheds some of this heat energy, cooling the intake charge.

Intercoolers and turbo plumbing are fairly simple things by nature, and there aren't too many ways they can fail. If an intercooler or the plumbing between your turbo and engine leaks, they'll vent boost pressure to the outside and cause a net loss of oxygen going into the engine.

Since there's not enough oxygen available to burn the fuel going into your engine, you'll end up spewing raw fuel out of the exhaust pipe in a cloud of black smoke.

Since every particle of black smoke is a drop of fuel, you can expect a severe drop in fuel economy as well as performance.

volvo d12 black smoke

Those symptoms will always manifest to some degree or another, but turbo control systems and computers can use any number of approaches to help compensate for a boost leak. If the leak is fairly small, your turbo wastegate -- the exhaust bypass valve -- can help to keep boost pressure in the green zone by increasing turbo rpm.

In cases like this, you may notice nothing more than a bit of lag upon acceleration and some extra turbo whine. In more severe cases, the computer will respond to the rich condition by going into its failsafe "limp home" mode, which is designed to make the car nearly undriveable by dropping power and restricting rpm.

Some cars -- notably the Subaru WRX STi -- utilize an air-to-water intercooler surrounded by engine coolant instead of an air-to-air intercooler mounted in front of the radiator. The only way an air-to-air intercooler can drop in efficiency is if something physically restricts airflow through the radiator or covers the cooling fins; dried mud will do it.

Air-to-water intercoolers rely on engine coolant and can get clogged with mineral deposits such as calcium, lime and rust just like your radiator or heater core. An efficiency drop will raise intake air temperatures, causing a reduction in horsepower and an increased tendency toward engine knock and ping. This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.

To submit your questions or ideas, or to simply learn more about It Still Runs, contact us. System Compensation Those symptoms will always manifest to some degree or another, but turbo control systems and computers can use any number of approaches to help compensate for a boost leak. Air-to-Water Failures Some cars -- notably the Subaru WRX STi -- utilize an air-to-water intercooler surrounded by engine coolant instead of an air-to-air intercooler mounted in front of the radiator.

About the Author This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.Welcome Guest Log In Register. Similar Topics. Hello, we have answers for your Volvo-related questions!.

Why not take a few moments to ask a question, help provide a solution or just engage in a conversation with another member in any one of our forums.

Volvo D12 black smoke.. Injector or something else?

Together we can make our Volvo community a better place. Powered By IP. Board 2. Black Smoke From Exhaust! View Member Profile. Jun 23PM. Post 1. We have a c70 with miles I believe it is the hpt convert. After about 30 miles of stop and go traffic mixed with highway the idle become very rough. When at a stop it will idle up at rpms and drops to rpms the entire vehicle shakes. Upon acceleration large amounts of black smoke exit the exhaust.

The vehicle smells like it is running very rich as if it were winter. The vehicle just recently had a tune up. Please help!. Jun 24AM. Post 2. A withmiles? You've been averaging around 1, miles a day?Diesel enthusiasts often refer to their beloved powerplants by a title once considered more of an epithet than anything else. The motor's "oil burner" moniker was once well-earned, as legions of trucks and trains would pour through the countryside spewing massive clouds of evil-looking black smoke.

The newest generation of clean diesel engines hasn't quite eliminated the smoking, but excessive smoke remains a bane of the malfunctioning oil burner. Diesels are fuel-throttled engines, meaning that rpm is controlled solely by the amount of fuel that goes into the engine: The more fuel goes in, the more power the engine will make within the constraints of the oxygen present.

The black smoke itself is actually aeresolized carbon, and it's what diesel fuel looks like when it gets really hot but doesn't have enough oxygen to combust. Put another way, smoke is what happens when you have too much fuel and not enough air to burn it. Turbocharger boost leaks and turbo malfunctions are probably the greatest contributors to excess engine smoke. Turbocharging only really became common practice in the s and 70s; turbos drastically increased power by shoving more oxygen into the motor and allowing it to burn more of the fuel.

Cleaner emissions were an important -- if unintended -- side effect to turbocharging. 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. Many newer diesels use intercoolers, which are radiators used to cool the incoming air charge after the turbo has compressed it. This one is more about a solution than a problem, since intercooler malfunction is unlikely unless there's something physically blocking airflow through it.

However, the addition of an intercooler or a larger intercooler will effectively increase the amount of air going into your engine. This can help a smoke-prone diesel to run a bit cooler and cleaner overall. Modern diesels are renowned for their ability to make massive power with little more than a new computer program and a tweak to the turbo's boost curve. Injecting massive amounts of extra fuel was once the go-to approach for aftermarket programmers, a strategy that did make more power, but resulted in massive clouds of black smoke and destructively high exhaust gas temperatures EGTs.

Modern diesel tuners have gotten a lot smarter in recent years, and many have introduced updated programs that optimize the engine's efficiency through injection timing rather than simply pouring more fuel in and calling it a day.

Not all excess fuel introduction is intentional; leaking or stuck-open injectors can inject more fuel than the engine needs, thus causing it to smoke. Since diesel fuel is basically oil, the engine is more than capable of burning any engine oil that makes its way into the cylinders. Leaking valve seals are unlikely, since boost pressure will force oil up into the valvetrain, but turbo oil seal leaks are common for older turbos and will indeed cause smoking.

If a seal leaks, then you might want to try checking the oil drainback line before tearing the turbo apart. Drainback lines often clog with carbon and sludge, forcing oil pressure in the turbo to shove lubricant past the shaft seal and into the engine.

This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. To submit your questions or ideas, or to simply learn more about It Still Runs, contact us. A Load of Hot Air Compressing air makes it hotter, and hot air -- by volume -- contains less oxygen than cool air.

Aftermarket Programming Modern diesels are renowned for their ability to make massive power with little more than a new computer program and a tweak to the turbo's boost curve. Other Causes Not all excess fuel introduction is intentional; leaking or stuck-open injectors can inject more fuel than the engine needs, thus causing it to smoke.

About the Author This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.Diesel engines, like everything else, have become increasing complicated over the recent years.

These improvements have made marine diesels much more efficient and more environmentally compliant as well as lighter and quieter. But this added sophistication has meant the newer engines are dependent on their computers to operate and require electronic diagnostic tools for most trouble shooting. These new electronic tools are extremely accurate and give detailed reports on how the engine is operating. They are also expensive and most people are unlikely, and in some cases not allowed, to purchase them.

Fuel, Air and Compression ; it is still possible to analyze the exhaust smoke to help diagnose problems with your engine. Most diesel engines, even the new ones, create some smoke black or white or both when they first start up. But if the smoke continues beyond the first few minutes, after the engine reaches operating temperature, there can be problems.

Solid black smoke is caused by unburned carbon from the diesel fuel while blackish gray smoke is a combination of this carbon and incompletely burned fuel. Blue smoke is almost always caused by excess lubrication oil somehow entering the cylinders. The smoke, besides being blue, will have a burnt oil smell that is relatively easy to identify.

There are a number of causes of this:. White smoke is caused by water vapor or unburned diesel fuel in the exhaust. It reflects that there has been misfiring in the cylinder.

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Often you can tell the difference by smelling the white smoke to see if the smoke has a diesel smell or not. The typical causes of white smoke are:. Tags: diesel smokeepaexhaust analysissmoke analysisvolvo penta. This site uses Akismet to reduce spam. Learn how your comment data is processed.

Powered by WordPress. Neeson, President Diesel engines, like everything else, have become increasing complicated over the recent years. Black or Gray Smoke Most diesel engines, even the new ones, create some smoke black or white or both when they first start up. So remembering F. Incorrect Fuel Grade or Contaminated Fuel. When fuel prices go up if often seems the quality goes down.

So check the fuel from your tank and change the fuel filters often. Excessive Fuel or Irregular Fuel Distribution. This is sometimes hard to determine, but it can be caused by: Improper rack adjustment. This can be measured, but it is pretty rare. Improper Timing. This requires a fair amount of knowledge and special tools. Faulty Injector Firing. The newer engines have a common rail and operate under extreme high pressure so if a faulty injector is suspected you will have to call a certified marine mechanic.

On older engines with separate injector lines mechanically driven fuel injection pump you can check a suspect injector by disconnecting the fuel line while the engine is running and see the effect on the engine.Why don't fictional characters say "goodbye" when they hang up a phone? If we can't tunnel through the Earth, how do we know what's at its center?

What causes white smoke from the exhaust and also a loss of power when you try to pick up speed and poor acceleration? All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.

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What Could Cause a Diesel Engine to Have Excessive Black Smoke?

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Wiki User You probably are loosing coolant also. You have a blown head gasket. Have the head checked for cracks when you have it off. It's possible the compression is within the limits on all cylinders. If this is the case, remove all spark plugs and rotate the motor by hand place a socket on the crankshaft dampner bolt and turn the dampner clockwise; look for coolant spilling out of any spark plug hole.

If coolant comes out of spark plug hole, suspect head gasket failure. Is the temperature gauge reading high? Or is the temperature gauge rising and falling? If so, definitely suspect head gasket failure. Get a Haynes Manual and do the job your self; big money saver!!!

Most importantly, do not drive that car until you get it fixed! The coolant is washing all the oil off the cylinder walls and you'll destroy the rings in that cylinder, not to mention the damage to the cylinder wall. That gets real expensive, fast. Answer Head gasket could be a problem, have it checked by a shop its a cheap test all they do is place a tester with blue liquid in the radiator. If it turns green it is detecting gases in the coolant system from a blown head gasket.

It could also need a valve job usually you can smell the difference between coolant or oil. Oil can pass through worn valve seals and burn out the exhaust valve causing white smoke.

Head gaskets are expensive to repair unless you perform the task yourself. You have to enough tools to repair and a machine shop will have to smooth sealing surface and any other worn parts need to be replaced. Could be a diesel? If not then replace your oxygen sensor on your exhaust.

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A bad oxygen sensor causes the exhaust smoke to be dark in color. Asked in Emissions and Exhaust Systems, Mufflers and Tailpipes, Ford F What cause white smoke from exhaust it turns black acceleration on a international 7.

White smoke is water vapor or coolant in the exhaust, the black smoke is the normal over-rich condition at WOT full acceleration White smoke can also be unburned fuel, generally seen on earlier, non-electronic engines that are mistimed. Asked in Emissions and Exhaust Systems What causes white smoke to come from exhaust?

volvo d12 black smoke

White smoke means head gasket, cracked head or equivelant.Welcome Guest Log In Register. Similar Topics. Hello, we have answers for your Volvo-related questions!. Why not take a few moments to ask a question, help provide a solution or just engage in a conversation with another member in any one of our forums. Together we can make our Volvo community a better place.

Powered By IP. Board 2. Black Smoke When Accelerating. View Member Profile. May 10PM.

volvo d12 black smoke

Post 1. Jul 9PM. Post 2. Hi Mate I had the same problem with mine ,around two thousand revs, i would accelerate and there would be a cloud of black smoke ,I booked it into a volvo specialist and they said it was the intercooler i have just got it back today and it has cured the problem there is no smoke all, hope this helps total cost inc vat the garage said it is a common fault with the d5 engine.

Jul 28AM. Post 3. Black smoke from a diesel are often too litte air running thru the engine. Or like "Volvo Driver" says; damage or obstruction of the IC Link To Us. Terms of Use. Privacy Policy. Do you like Volvo-Forums. Link to us and help spread the word about our forum. May 10PM Post 1. Jul 9PM Post 2.

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Smoke From The Engine. Time is now: 14th April - PM.


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Gocage Posted on10:12 pm - Oct 2, 2012

ich beglückwünsche, Ihr Gedanke ist glänzend