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.
Is it normal to have black smoke from a diesel engine?
A little black smoke is normal on a properly functioning diesel, but keep an eye on the amount of smoke at different RPMs and loads so that you will be able to tell if something is amiss.
What causes black smoke in the combustion chamber?
Piston Rings are designed to prevent the infiltration of engine oil inside the combustion chamber. If there is any problem with the piston rings, the engine oil starts flowing into the combustion chamber. The combustion of the mixture of this engine oil and the fuel delivers black smoke. 6. Engine Deposits
Why does my car have black smoke coming from the tailpipe?
Engine deposits are another reason causing black smoke from tailpipe. When the engine is new, it will run fluently without any problems. But after a long period of use, the engine conditions get worse and worse and this consists of getting accumulations of combustion product in important areas like combustion chambers and injectors.
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.
What are the most common LLY Duramax engine problems?
The 6 Most Common LLY Duramax Problems. 1 1. LLY Bent Rods. While the LLY made competitive performance numbers back in 2004, the engine is certainly not competitive to the modern day diesels. 2 2. Head Gasket Failure – LLY Duramax. 3 3. EGR Valve Failure. 4 4. Glow Plug Failue – 2006 LLY Duramax. 5 5. Overheating in Pre-2006 Models.
When do you get black smoke in your car?
During the 2–3 hard accelerations after normal light load driving there may be some black smoke momentarily but should not last for more than 5 seconds. During hard acceleration there may always be a very faint puff of black smoke. Compare the scan tool data at idle with the scan tool data list. Refer to Scan Tool Data List.
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 clean diesel engines that don’t 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.
What causes black smoke and loss of power on acceleration?
Helloif the turbo pipe is collasping when revved then this will be choking off the engine and not letting enough air through and so resulting in black smoke / unburnt fuelI’d suggest replacing the pipe with a new item Ask Your Own UK Car Question Was this answer helpful?
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.
What causes lack of power and blowing black smoke?
Check your boost tubes, sound like one of them blew off or has a hole so you arent getting boost. The issue has to stem from a part that is old or new and can cause a lack of power and smoke. So is it black smoke you are describing?
What causes black smoke from a Nissan Patrol?
Black smoke and lacking power is caused by lack of air supply. So think of inlet and exhaust restrictions, turbo not getting on boost quick enough, egr open when it should, swirl flaps, air mass sensor, etc. Well i ordered a new MAF put it in this morning and waa laa its back to new again.