Does changing oil of a diesel engine reduce the black smoke emission?

Question

I have a 97 toyota hilux pick up. 2.4 diesel engine. I changed the oil 6mos. ago and i notice the black smoke when climbing uphill.

Answer 1

No. The black exhaust smoke is from incomplete combustion of the fuel, and is more likely to be from poorly adjusted or dirty fuel injectors. Oh, and you really should change the oil more than every six months.

Answer 2

Older diesels aren't as efficient in fuel injector / power cell, pump department and emissions qualities. When you really "get into the throttle" the fuel injector pump delivers a massive amount of diesel fuel into the combustion chambers. The fuel does burn completely but the fact that #2 home heating oil and kerosene mixture emits black smoke is a sulfur problem or part of the combustion process.

If you've ever followed a modern updated diesel car or truck you will notice no black smoke on level ground and very little while climbing hills. Turbochargers help to fill the combustion chambers with compressed air which raises the combustion efficiency of a diesel reducing black smoke emissions. Newer diesels are fitted with two and three zone platinum coated ceramic catalytic converters to further reduce emissions.
Buying top grade diesel fuel is tricky to say the least. Pumps do not tell the costumer exactly what they are buying.

I've followed old whipped out Volvos, VW's and Mercedes diesel cars on the road which make more black smoke than our old farm diesel tracters plowing a field. Ther rear bumpers and lower trunk lids are black as he*l. The drivers don't care as they probably are nearing 800,000 - 1000,000 miles and are smiling.

Don't be allarmed when you change your oil because it's going to be black also. Sulfer from the fuel escapes into the oil pan because of incomplete ring seal mixes with the motor oil and causes it to turn black in a few days. Always be sure to use diesel engine oil.

Answer 3

Not really. That soot is a lot of diesel dumped in your engine. Try checking your air filter to see if is clogged or some like that. Also the injector timing too. Is like the ignition system in a gasoline car.

I have worked on diesel engines and 6 months oil changes is fine depending on how much you drive and what you pull. A good synthetic oil can give you a longer oil life and save some money by not changing often. Follow your truck Owner's Manual for oil changes, you can not go wrong with that.

Answer 4

How To Reduce Diesel Smoke

Answer 5

Oil change is independent of black smoke. Black smoke is what you want to see when you're pouring the coals on, nothing wrong with a little black smoke from a little excess fuel when the engine is reaching full load. Oil changes should be done every 300 hours or 3000 miles. There are some excellent oils on the market with good anti wear additives, run the good stuff.

Answer 6

changing oil diesel engine reduce black smoke emission

Answer 7

black smoke is a sign that you have too mutch fuel or not enough air. i would recomend you pull the air cleaner out and work the engine. if the black smoke goes away you had a pluged air cleaner.thats the cheap fix. if the smoke does not go away then either your rack fuel setting is set too high or you injector tips have gone bad and are driping extra fuel in the chamber. these things need special tools and should really be repaired by a pro.

Answer 8

its most likely that the injector pump is going bad or there is some thing else going bad in the fuel system have the fuel pressure and fuel system checked

i had a 1986 ford f-250 with the 6.9L diesel and it did the same thing the injector pump was bad.

Answer 9

this emission tells you that the fuel injection system needs to be serviced more specially the nozzles