Diesel engine producing black smoke - why?
This is on a diesel electricity generator (big). We tested it on load, but not full load (maybe 1/3).
The smoke is coming from the correct place of course (the exhaust)
Answers:
Diesels not running under load undergo a condition called slobber. Considerable unburned fuel builds up in the engine and turbo. The set should be run at full load at least once a year. Better if you can do it monthly. Most owners test the set weekly without load. This is when the problem begins. The exhaust does not get hot enough to rid itself of the unused fuel. Of course maintenance of the air filter is a must as well.
its sh.agged
your burning oil.
you'll have to go to a garage
soot?
switch it off. ie no smoke!!
there something wrong either with your engine or the carburetor it doesn't burn the diesel effectively resulting more smoke and more diesel consume
Just let the engine run and see if it clears ? if not check air filter,
If the generator has been turned on it's side ? it could be that engine oil has run into the valve ports in which case the only thing that you can do is let the engine run and it will slowly burn off ! PS black smoke is engine oil , white smoke is diesel oil !
air filter
They call diesels "smokers" for a reason.
You may need to clean the injectors or just let it warm up for a few.
Black smoke is not bad.Blue white smoke is.
Probably soot building up. You'll need to clean the injectors.
Classic method is to get the motor hot, then run it flat out for a couple of minutes.
If that doesn't cure it, you can get injector cleaning fluids to add to the fuel from most car accessory shops.
If those don't work, check the timing, then after that try replacing the injectors.
To prevent soot build-up in future, mix rapeseed or sunflower oil with your diesel fuel. You need at least 20% veg oil, some diesels are happy on up to 95% veg oil. This is quite legal for a generator as well as cheaper & better for the environment.
Run it on full load for an hour to get up to correct combustion temperature and to clear any deposits.If problem persists check oil level in sump and condition of air filter.
If still smoking check injectors .
you are putting to much diesel in the motor
Black smoke is normal for a diesel engine.
If you follow a diesel car which is accelerating, you will see black smoke from the exhaust.
It is due to the chemical composition of the diesel, and the method of combustion.
Blue smoke is oil being burnt.
White smoke is unburnt Diesel coming out of the cylinders.
Parce que c'est moins polluant que l'essence
Your injectors need servicing/minor tune-up call (07783670968)mech..
IVE HAD THE SAME PROBLEM AND THE GARAGE REPLACED THE INJECTORS ALSO BEFORE DOING THIS REDUCE THE FUEL TO THE INJECTORS THERE SHOULD BE A SCREW ON THE PUMP TO ADJUST THIS HOPE THIS HELPS
Its burning oil. Get it sorted and make sure it's tested on full load
if it hasn't been used much it will blow black smoke for a while it is all the carbon that has been in the engine over time it should be fine after a few runs, put it on max load it won't harm it.
The answer from Letsee is pretty accurate but I would add that using an injector cleaner ("Tune-Up In A Bottle" made by Lucas is superb, sold at Motaquip stores) added to the fuel will help. My diesel car was smoking quite a bit and after the injector cleaner went in it was a lot better. I subsequently backed off the fuel pump pressure and now the car only smokes slightly when very cold. It is worth high revving the engine once per week to clear out the slobber.
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